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K9 Sport Sack

K9 Sport Sack Plus 2 - Small, Light Grey - Ideal for Dogs 13-16” Long - Adjustable, Backpack-Style Carrier with Multi-Functional Storage Pack, Thick Shoulder Straps & Padded Back Panel

Based on 2,184 reviews
Condition: New
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$99.95

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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Nov 18
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At a glance

Condition
New
Color
Light Grey
Size
16.9"L x 13.0"W x 17.0"H
Weight
1.4 lb
Material
Fabric
Special Feature
Adjustable
Pet Type
Dog
Warranty
Includes, but is not limited to, manufacturer defects, product malfunctions, sizing issues and incompatible dog personalities within 60 days of purchase. Does not cover damage caused by abnormal pet chewing, tearing or other defacement as well as common wear from use, or use of dogs exceeding the weight and height limit set for each product. If your product is deemed to meet our K9 Ruff & Tuff Guarantee, a new product(s) will be issued so you and your dog can get back to your adventures!

Features 5

  • BACKPACK DOG CARRIER - The Plus 2 is our most complete carrier for small to medium-sized dogs. The thick, padded shoulder straps and padded back panel allow for more weight, and provide extra comfort for you on longer, more strenuous adventures.
  • FIND THE RIGHT SIZE - The Small is best for dogs with a length of 13-16 from collar to the base of the tail, and a girth up to 27. Typical dog breeds that will fit this size backpack include Jack Russell Terrier, Mini French Bulldog & Pomeranian.
  • MULTI-FUNCTIONAL STORAGE - Plus 2 comes with a removable storage packgreat for gear, treats, or other necessitiesplus two full-size water bottle holders made with elastic PowerMesh to accommodate even the largest sizes.
  • KEEP YOUR PUP COMFY - Our patented taper-fit design supports & stabilizes your dog to keep them comfy during their ride, while the patented upper arm holes allow their front legs to be free, and patented mesh panels deliver cooling airflow.

Description

Have your dog sit on top or to the side of the opened backpack. Place front paws through the leg openings, clip the carabiner to the collar/harness, then secure the collar enclosure. Zip the bag and thread the buckle through the zipper loop. Tighten lumbar and shoulder straps as snug as possible. Adjust and buckle the sternum strap and waist buckle if needed. Enjoy the Ride! Trainer Sky Pack Air 2 Urban 3 Plus 2 Knavigate Kolossus

Specs 27

Color Light Grey
Brand K9 Sport Sack
Product Dimensions 16.9"L x 13"W x 17"H
Material Fabric
Special Feature Adjustable
Item model number PLUS-GRY-S
Department unisex-adult
Manufacturer K9 Sport Sack

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

Makes it possible to take my dog with me on my bike
Review Image by Isabel
Review Image by Isabel
I bike a lot for transportation and for fun, so when I adopted a dog I was trying to come up with a way to bring her with me on my bicycle. I found that most dog carriers and backpacks are meant for small dogs, maybe 20 lbs max, and she is 38 lbs. Then I found the K9 Sport Sack, and I got the Air Plus because it is the only version rated up to 40 lbs (the Air and the Urban are up to 30). Now I'm glad I did - the detachable storage bag (I don't have it on in the picture) buckles easily on once I have my dog in the backpack and holds everything I need: leash, food, water, bowl, wallet, phone, bike lock, etc. The Large fits her well, but I wouldn't put a bigger dog in it. I'm not sure that every 38-lb dog would fit, either, but she is lean and long-legged, and within the recommended measurements. I definitely struggled the first few times trying to figure out how to get her into it and get the backpack on my pack - fortunately I have a patient dog! In order to get her in, I lay the bag open on the floor, put my hand under her chest/between her front legs to lift her up and feed her front paws through the arm holes, buckle the bag around her neck, then scoop her rear up and tuck her into the bag and zip it. As far as I can tell, she loves riding in it and has her nose in the breeze the entire time. She adjusts herself every now and then and sometimes leans to the side, but she doesn't wriggle at all; even if she did she is secure. The only thing is, she does get quite heavy after a while! It would be awesome if there were some way to add a hip belt like a backpacking backpack has, as having 40 lbs on my shoulders is a lot after a few miles, but I can see why the backpack doesn't have one because even with the size large it sits a little above my hips. Overall this is a great solution, the backpack is well-made and allows me to take my adventure buddy with me! ... show more
Reviewed in the United States on July 26, 2019 by Isabel
Well constructed
Color: Summer Mint Size: Medium
Very well constructed. I felt very confident that it was secure. My 18lb King Charles cavalier fit.
Reviewed in the United States on August 29, 2026 by Denise Bliss
Novel Concept, Worth the Price
Color: Summer Mint Size: Small
I love the overall concept. My dog fits in it PERFECTLY. She's a very small Westie, only 11 lbs., but solidly built as Westies are. She loves going in the sack, as she is quite arthritic but loves to go outdoors. I love the backpack that allows me to stash our supplies for hiking. My complaints are as follows: 1) the backpack attaches to the sack awkwardly and my supplies rattled against the sack, no matter how well I secured them. 2) the little backpack should have had a separate strap so that it can be worn alone. 3) the straps have to be tightened very tight to keep my dog riding up high on my shoulders. Even so, I felt like I was constantly hiking the bag up, as it was really pulling hard against my shoulders (for reference, I'm 5'2", 155 lbs., hit the gym 5 days per week, can lift fairly heavy, high reps, and I run outdoors). My lower back hurt pretty bad after a 2 hour, 4 mile hike, during which time I carried my dog on and off-- approximately 75% of the time. I look forward to using the bag again. I think some of the design flaws will be improved with time, as this is an excellent concept and the best bag I could find for the money. Side note: I ordered custom patches from the K9 website to complete the bag (they're awesome). The bag comes with a velcro strip to secure the patch, and looks dumb without it. ETA: I got many, many uses out of this bag and my dog enjoyed it, too! Have recommended to friends and family. ... show more
Reviewed in the United States on April 14, 2020 by Kimberly Finnegan
Love this pack! But chest strap is too high and rides on my neck and chokes
Color: Light Grey Size: 16.9"L x 13.0"W x 17.0"H
Review Image by H20fall
Review Image by H20fall
Now for one more update after a summer of use, 9/2/18. I have used this pack every other day all summer long to take long bike rides with a stop at one or even two off leash dog parks to let my dog run free and socialize. I have found that I can also include stops at the store to pick up a couple items to carry back home in the side saddle bags. I leave my dog in the pack to go inside the grocery store, as well as ordering at cafes to take outside and then take the food to eat on the cafe patio or to go to a nearby park to eat. No one has objected to my dog in the pack on my back. Quite the opposite. Dog lovers seem to go bananas over her in the pack. I get lots of positive remarks from other shoppers and passing vehicles on the road as well. My dog stays really calm and very quiet while in the pack. Kind of like a security thing for her. It calms her. So no issues in any way with riding. The pack has withstood the heavy use. I do get very sweaty on my back where the pack rests. I wish for improvements here for better ventilation. The straps do flap and flick about in the wind while riding, so I tuck them into the straps to prevent getting hit in the face of me and my dog. When it was crazy hot out. I would stop at public fountains and get her wet or unzip and pour water over her to wet her down to help cool off. My favorite fountain has no pool and thus allows bikes to ride through the center to get good and wet. If I take her to a river beach, I end up with a very gritty and muddy shoulders and neck where her paws rest. The pack is easy to clean off with a hose rinse. And air drys quickly. My dog does look pretty damn cute riding in the pack. Ok, I am updating this review. I've been used the pack for my pup for 3 weeks. I do wish the straps were padded a bit thicker and that there was a hip belt for weight support onto the hips. But. That said, my dog loves to ride in the pack as I ride my bike to the off leash dog park and around town for erands (as long as she gets to get out of the backpack and run, sniff and play at the off leash dog park for some exercise) We get lots of positive comments too. I also need to add that my bike is set up for sitting upright while riding. And this dog carrier pack works just fine in this position. My pup is only 10 lbs. she likes to hang her head over to one side or the other to watch the world go by but this doesn't affect my balance on the bike in the least. I can't imagine using this pack with a dog while leaning over in a more prone position though. So far, my pup seems to tolerate about a one hour ride on the bike. After that she gets a bit antsy and asks to stop and get on the ground. Also, if your dog gets her feet wet and muddy, consider that you will too where their paws rest on your back. :) Also, I use the extra add on accessory pack to store my heavy duty U bike lock and cable and bungie corded onto onto the back wheel saddle bag rack. A very lightweight rain coat can fit into the accessory pack along with a wallet and keys... I have also taken to bringing my bike into the off leash parks and walking the bike along with my dog and using the kick stand to park the bike when we just hang out with other dogs and their humans. Easier than attempting to lock a bike to a wire fence, which is not at all secure. My first rides with this pack and my dog was to give the pack Three stars because the engineering and construction of this pack could improve a lot. I will say that they did improve on the thickness and padding of the shoulder straps since past reviews I read about how thin the shoulder straps were. Zippers seem sturdy. All the stitching is finished and no loose ends. The pack material seems sturdy and should last. Not as breathable as they claim though. The back of the pack is padded and has some room for venting and breathability. This could improve! My mountain hardware day pack would be a great reference for designing a nice breathable pack resting agains a back. As well as improving the straps, adding a thick high end hip belt and placing the chest strap in the correct place! Geeze! that one thing! Getting choked was not good! and this strap is rendered useless if your dog and gear weigh more than 10 lbs!!! My 10 lb. miniature schnauzer was easy to load into the pack and she goes calm and quiet while riding on my back in this pack. She does fit the size small pack. But the bottom where my dog crouches in a sit position slides and angels onto my back flat instead of staying flat and horizontal to the ground for her back legs to fold into a sit/crouch. Maybe with the block they sell separately, the bottom of the pack would stay flat, but that would make my doh not fit the pack. I bought the pack for bike riding to the dog park. After testing out the dog park bike ride, I would never ever use this pack for carrying a dog over 10 lbs while hiking. The incorrect placement of the chest strap and lack of a good thick hip belt make this pack a hell pack and a hell hike with a heavier dog. Plus you would need a companion to come along and be willing to carry your share of lunch, snacks, water, etc. I also got the detachable accessory pouch. Thinking I would carry the - oh so- damn heavy kryptonite bike lock and cable, leash, dog treats and maybe a light rain jacket? It does fit the u-shaped lock, cable for the front tire, leash. and small dog treat/ball pouch and a small collapsable water bowl. There is a smaller outer pocked for a large smart phone, small wallet and keys. No room for a light rain jacket if it's threatening to rain. I would not choose to carry a dog heavier than 10 lb. My bike lock is super heavy duty and heavy and it added 4 more pounds to the entire pack. There is no way I am going to leave my bike unlocked and unattended at a store or a cafe or park. I live in a town where bike theft is very high. Attaching the accessory pack loaded to the back of the dog inside the pack is cumbersome and not good. If the pouch was just light stuff it would be ok. I had one full 16 oz water bottle in the side pouch. When I put the pack on with the dog and accessory bag packed with bike lock, cable, leash, and water bottles. It was 78 degrees and breezy out. I rode 10 miles total with a stop at the dog park in the middle of the ride.With the accessory pouch attached to the pack, and the chest strap snapped, the chest strap rode up at my neck, no matter how tight or loose I adjusted the shoulder straps, choking me. I had to turn around and ride back to the house, take off the pack and remove the pouch and bungie it to my bike's rear saddle bag rack. Without the extra 4 lb pouch, the chest strap would stay just at my collar bone. So in reference to my really high end day pack that carries about 15 lb max with emergency gear and water bladder, food for a long 20 mile day hike up in the mountains, with really nice and thick padded straps, the chest strap rides at mid chest no problem. That is not the case with this dog pack at all. I choose the light grey color to keep my dog and me cooler knowing that the black, blue or red colored pack would attract more solar heat. There is NO PLACE to store the leash except in the water bottle side pouch? I could bring along a saddle bag but then there is the issue of locking up the bike and no way to keep the saddle bag secure and having to schlep it along on on the walk inside the dog park. This dog pack was easy to leave hanging from one shoulder so the sweat and my shirt could dry out while my pup romped, socialized and played with the other dogs off leash. On the return ride, my pup was hot from playing and I did wet my dog with water before putting her back into the pack for the ride home. I am going to give it one more test try before I decide if its going back. ... show more
Reviewed in the United States on June 20, 2018 by H20fall
Worth every penny
Review Image by Me
I used the size M for my 18 pound 12 year-old Pomeranian. I put foam on the bottom because it was a bit big for him so maybe size S would have worked better. He was walking 9 miles at a time 4 year ago but due to arthritis and right medial shoulder subluxation I started carrying him 1/4 mile away from the house most days and then he usually tried to walk back on his own. A also carried him for 4+ mile walks when we met up with friends for a dogwalk. The backpack was a huge upgrade compared to carrying him although he usually started to fuss his legs after 1-2 miles at which point I'd take him out of the backpack and we'd slowly walk back home together. It was challenging to keep him high up on my back. The strenum strap that came with it kept popping off on one side. I finally used several carabiners connected to each other to pull the straps together on the front and I also tightened the shoulder straps. This made it harder for me to safely get the backpack on and off but it allowed my dog Elvis to be more upright with his parws on muy shoulders. This backpack allowed us to do a couple of 1-2 mile walks every day. A lot of people that we passed would say something once they saw Elvis and how cute he was chilling on my back, saying that he was definitely happy. He was 12 years old but everyone thought he was a puppy. I did lose my beloved dog Elvis on December 8 and now over a month later, I'm still beside myself in pain. I am however happy that I bought this backpack 8 months before his passing as it allowed us to enjoy the outdoors together. For comparison for people trying to decide on sizing, my Pomeranian was: •about 16.5" from collar to top of base of tail when sitting upright •18 pounds •21" chest girth, but a bit wider near the rear 22" ... show more
Reviewed in the United States on January 16, 2022 by Me
Fits well, our dog is comfortable in it.
Color: Light Grey Size: 16.9"L x 13.0"W x 17.0"H
Fits perfectly for a 13 pound , small breed dog. Happy with this purchase.
Reviewed in the United States on August 12, 2026 by Maria Jose Gonzalez Arredondo
Great Design for the Dog, Not So Much for the Human
Color: Summer Mint Size: Small
Review Image by Sherry L Rand
I have a small dog and I did read the reviews about having to have a block added in the bottom. We were able to take care of that to get her situated in it properly (a cut up yoga block worked perfect and didn't add much weight). I love how it secures the dog in and I also love the additional pouch I can attach (to put in her leash and such) as well as the side pockets we can use for water bottle. What I'm not thrilled with (and have read this in other reviews) is that the entirety of the pack isn't long enough for the human adult. I has to ride so far up on the back that you literally are putting that weight entirely on your shoulders where a longer pack (maybe add an additional pouch on the bottom) with a hip strap would be significantly more comfortable for me. I realize a larger size might solve the length problem (for bigger dogs) and I know others have suggested the hip strap It would also keep it more secure. So all sizes being long enough to accommodate a hip belt/strap would be perfect. I may do some playing around with my hip/fanny pack under it. Felt very secure and I like that she has her front legs out (unlike other "bag type" packs. She seemed very comfortable in it. ... show more
Reviewed in the United States on January 25, 2021 by Sherry L Rand
Great carrier!
Review Image by Karen
We got this for my 18 pound sheltie so we could take her to more crowded events where she's nervous on the ground. I was SURE she would hate it and flail around inside but she could not be more chill about it. This bag is super simple to use. The biggest struggle is setting her inside with her feet tucked under her but we're getting better at it. I love that the inside flap under the zipper is so large. I don't get any of her long fur caught while zipping her in. I also like the the ability to clip her harness for additional security. The padding makes it nice and comfortable for the human. It takes a little adjusting so she can sit higher up, but again, we're getting the hang of it. It doesn't help that instead of wanting to look over dad's shoulders - she decides to just sit back and hang her head to look behind and to the side lol I also love the velcro on both the bag and the detachable bag for name or message (customized patches available on company website - I got a do not touch patch for now - but she did so great I'll just buy one with her name next) The detachable bag is big enough to put her leash in, a bottle of water, snacks and a few more items, as long as you can handle the additional weight. I would advise practicing with all the clips if you get the detachable bag. We did not and made a mess of things trying to do it while out lol It's super simple though if you take the time to sort it out first. We took her to the farmers market for her first outing on a warmish low 80's day, for about an hour, and she didn't seem to get too warm in there. I'm super happy with this purchase and will take it with me whenever we go out just to have on hand when needed. I'm planning on getting another for my second sheltie. He doesn't need it like she does but I find it super useful in situations where it's safer to be off the ground so they can still come with us. . ... show more
Reviewed in the United States on June 28, 2023 by Karen
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