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K9 Sport Sack Walk-On - X-Small, Anthracite Black - Ideal for Dogs with 9-12” Back Length - Lightweight, Packable, Backpack-Style Carrier - Includes Compatible Harness & Storage Bag

  • Based on 101 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Feb 13
Order within 11 hours and 26 minutes
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Style: X-Small (11-13" Neck 11-15" Chest)


Color: Anthracite Black


Features

  • VERSATILE DOG CARRIER - The Walk-On was made for dog owners that want an all-in-one product. This lightweight, packable carrier allows you to walk your dog, carry them short distances, and store your gear.
  • FIND THE RIGHT SIZE - The X-Small is best for dogs with a length of 9-12 from collar to the base of the tail. Typical dog breeds that will fit this size backpack include Chihuahua, Havanese, Pug, Shih Tzu, Yorkshire Terrier & Toy Poodles.
  • THREE UNIQUE PRODUCTS - The Walk-On features a harness, a storage bag, and a backpack-style carrier. Use the components as a set or individually.
  • COMFORTABLE - With padded mesh on the harness & vents on the carrier for your dog, plus padded, adjustable support straps on the backpack for you, our design will keep you both comfortable on your adventures.
  • CREATE A HEALTHY, BALANCED LIFE - This product was created for owners who primarily walk their dog, but want the option to carry them if needed. Its best for the end of walks or hikes, to give your dog a break, or in case of an emergency situation.

Color: Anthracite Black


Brand: K9 Sport Sack


Material: Nylon


Special Feature: Outdoor Safe


Size: X-Small (11-13" Neck 11-15" Chest)


Product Dimensions ‏ : ‎ 7 x 4 x 10 inches; 14.39 ounces


Item model number ‏ : ‎ WALK-BLK-XS


Date First Available ‏ : ‎ February 10, 2022


Item Weight: 14.4 ounces


Manufacturer: K9 Sport Sack


Item model number: WALK-BLK-XS


Date First Available: February 10, 2022


Item Package Dimensions L x W x H: 10.2 x 7.95 x 4.25 inches


Item Dimensions LxWxH: 7 x 4 x 10 inches


Brand Name: K9 Sport Sack


Target Audience Keyword: Dog carrier, dogs


Warranty Description: Activities with your pet can be inherently dangerous. Please measure pet correctly to ensure the highest level of safety and comfort. We are not responsible for any injuries involving you or your pet using the K9 Sport Sack. Please be responsible.


Color: Anthracite Black


Size: X-Small (11-13" Neck 11-15" Chest)


Material: Nylon


Age Range Description: All Life Stages


Style: X-Small (11-13" Neck 11-15" Chest)


Specific Uses for Product: Aggression Training, Anti-Anxiety and Behaviour Management, Interactive Play, Outdoor, Suitable for Adult pets


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 13

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


  • Great value product, with the best customer service I’ve ever received.
Style: Large (17-19" Neck 17-24" Chest) Color: Sunset Orange
The combination of a harness with removable storage, and a *safe* carrying bag with multiple points that anchor it to the harness as well as to your own body, is something that just isn’t available anywhere else. The carry bag folds down to nothing, so that it can even be stored in the mini backpack that attaches to the harness. The quick and impeccable customer service was a welcome surprise. Some tips, and potential issues that may have a better solution than my current approach: 1. Very furry dogs can be tricky to size correctly. When measuring the neck, really pull your measuring tape (carefully) until it’s right up against your dog’s skin, gently moving as much fur as you can out of the way. The harness’s neckpiece is a soft stretchy mesh that will be forgiving for overly large necks, but isn’t adjustable at all. So size down in terms of neck size. 2. Skinnier dogs may have chest measurements that bring you to a size with neck measurements much higher than those listed in the table. I’m still trying to figure this one out… so far I usually anchor the harness neckpiece to my dog’s collar, and might have a seamstress tighten the mesh collar. 3. Length matters (ha). I was tempted to size down to a Medium for my Corgi for a tighter and more supportive fit. But it was extremely obvious that a smaller bag just wouldn’t be long enough. 4. This is somewhat Corgi/Dachshund-specific, but was a big issue for me: short legs can also be easily retracted from the sack’s foot openings. With a dog which is entirely used to the situation, this probably wouldn’t be an issue at all. But if they squirm even a little bit, a leg can easily pop free, and then they’ll quickly feel trapped and anxious. ... show more
Reviewed in the United States on April 22, 2022 by Dan E.

  • Great quality
Style: Small (13-15" Neck 13-18" Chest) Color: Anthracite Black
Great quality but runs small.
Reviewed in the United States on September 6, 2025 by Sabrina Rose

  • horror bag that is poorly designed
Style: Large (17-19" Neck 17-24" Chest) Color: Sunset Orange
Got large bag for my 17 lb dog and this bag is so thin and fragile that it makes me nervous using it but I did not even get to use it because this bag REQUIRES 2 people to setup It is extremely difficult for one person to (1) get your dog into the the bag and (2) it was extremely difficult to get the backpack on me. Since it's so thin, I had no confidence in getting the bag on my back. The first time I tried to use this bag, I wasted 25 minutes and gave up. A week later, I tried again and wasted another 20 minutes of my life on this extremely expensive bag that fails to work. I imagine it is okay for a tiny puppy but no way does it work for my dog. ... show more
Reviewed in the United States on November 28, 2022 by Doon Eng

  • very easy to use and dog likes it
Style: Medium (15 - 17" Neck 15 - 21" Chest) Color: Shark Skin Gray
Why did you pick this product vs others?: price
Reviewed in the United States on June 19, 2025 by John Kelly

  • Was disappointed
Style: Large (17-19" Neck 17-24" Chest) Color: Sunset Orange
I was unable to use this product after I bought it. The return window had long sense closed by the time I was ready to use it. The weight limit on this model was not a parent at the time of purchase. It has a 30 lb weight limit, which I had to dig to find the information on. My Corgi is 40 lb, and he is all muscle, so it's not an issue of overfeeding or anything like that. I think it would work for smaller Corgis or possibly female Corgis or other breeds, but many Corgis exceed this backpack's suggested weight limit. ... show more
Reviewed in the United States on September 19, 2023 by Tiberius James

  • Nice idea. Returned
Style: Medium (15 - 17" Neck 15 - 21" Chest) Color: Buttercup Yellow
No neck adjustment. Top heavy rolls to side on dog. Dis not even try to use with dog in pack. Too cheap/ flimsy for high price. Returned
Reviewed in the United States on March 29, 2025 by T Roy

  • Excellent buy! Sputnik loves it
Style: Small (13-15" Neck 13-18" Chest) Color: Sunset Orange
Sputnik is a Frenchton (15 lbs) it compacts to fit on his little harness packback when not it use. This pack also cinches down enough to keep him secure when being carried. I did order a small originally, but now that he is a full year old, I need a medium. He can still use a small, but the next size up would be more comfortable - Love this back pack! Do recommend! I did expect to carry him alot more, but he loves to run and hike! ... show more
Reviewed in the United States on August 19, 2022 by Kateri Killian Kateri Killian

  • I believe it will save my summertime hot dog problems
Style: Large (17-19" Neck 17-24" Chest) Color: Buttercup Yellow
The backpack is light enough for Radio to carry and large enough for me to carry him. Usually he poops out about a half mile from home in the summertime. Now we can walk in the summer with a little less stress. Me pretty happy with this purchase.
Reviewed in the United States on January 27, 2023 by Gary Hansen Gary Hansen

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