Buy Now, Pay Later
As low as
$16.67
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 2 left in stock, order soon!
Arrives
Sunday, Feb 22
Features
- Ninja Training with seven obstacles including: a three piece 10" x 2.5" nylon rope knows, two piece 16" monkey bar holds with triangle safety carabiners, and two gymnastics rings with textured finish
- Hang 30' 2" Slackline webbing between two posts or healthy trees
- Includes carrying bag
- Ages 6 and up, Max weight 250 lbs; Adult supervision required
- Endorsed by Ninja Warriors worldwide
Size: 30'
Material: Alloy Steel, Nylon, Wood
Color: Red/Blue
Brand: Slackers
Vehicle Service Type: Passenger Car
Size: 30'
Material: Alloy Steel, Nylon, Wood
Color: Red/Blue
Brand: Slackers
Vehicle Service Type: Passenger Car
Load Capacity: 250 pound
Fastener Material: Alloy Steel
Fastener Type: Buckle, Carabiner-like Hook
Number of Pieces: 3
Product Dimensions: 360"L x 2.5"W
Manufacturer: Brand 44
Unit Count: 1.0 Count
UPC: 850000011120
Global Trade Identification Number: 20
Item Weight: 10 pounds
Item model number: SLA.788
Manufacturer recommended age: 5 - 21 years
Is Discontinued By Manufacturer: No
Department: unisex-child
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Feb 22
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
I bought this for my sons 9th birthday. It it amazing! The balls are definitely a little more difficult to hang on to when compared to the wooden bar or the rings but it's nice that there is variety in the set. I also bought two 6 foot thing ropes from Home Depot and hung them as climbing ropes on either side of the apparatuses. Without the ropes my boys couldn't reach the rings or wooden bar so I was picking them up each time - the rope has really helped with making this something they can use 100% on their own. The NinjaLine is always a kid favorite for play dates and it's super easy to setup and take down. Highly recommend
...
show more
Reviewed in the United States on July 31, 2018 by Susie Creamcheese
Slackers Ninja Line is amazing! It is sturdy and stands up to all the stress we have put on it. It is easy to set up and the maintenance is quick and easy. There are so many options of things to hang on it, you can personalize it a lot. It got to the point where it was getting used around an hour every day. It is fun for doing stunts on, it will also get you very fit. It is an awesome, fun workout. Especially for your upper body.
...
show more
Reviewed in the United States on July 10, 2022 by Purple Iris
The Good: Seems very strong and able to withstand a lot of abuse. The grips are great and the kids are having a lot of fun with it. The ratchet worked well (after I read the instructions on releasing it :) The not as good: The length of the webbing where one can place the hanging grips was shorter than I expected. The obstacles only went 2/3 of the distance between the trees in our yard. Also, it took some serious work to get the carabiner's through the opening in the webbing, at least the first time. Overall, lots of fun for years come
...
show more
Reviewed in the United States on April 30, 2017 by Lamedeity
Quality is great and our kids do thoroughly enjoy it. However, the instructions and details giving you an idea of how much space there needs to be to stretch it out and hang was very inconsistent and caused us problems in setting it up. We use telephone poles for the supports and because of it did not have the right spacing between ends. We had to add another strap for an extension.
...
show more
Reviewed in the United States on October 16, 2025 by Jerri B
It was easy to set up. I just had to attach each hanging apparatus to the slack line first. It fits nicely between the two trees that I have in the backyard. Now that we've installed playground wood chips underneath for safety, I will be putting it up higher so the adults can use it too. It is very hard...we are really working on our grip strength to be able to complete this. My 9 year old daughter has been able to get half way across. Now that it's starting to warm up, we'll be able to practice more and hope to report that we can complete it.
...
show more
Reviewed in the United States on March 23, 2017 by Alice S
This is our second Slackers purchase. I am very impressed with the quality of their gear. This ninja line has 2 layers of webbing throughout the entire line that are sewn together with spaces left for the 'biners to slide through. The ratchet is strong enough to easily tension the line in a few seconds. We had it out of the box and up to use in 20 minutes. The most difficult part was getting the 'biners through the pockets. We found it much easier to do with a lot of slack in the line. There are 5 extra pockets to add more stuff. We added a rope ladder, the spinning wheel and a climbing rope.
...
show more
Reviewed in the United States on July 27, 2018 by tylioromiosaurus
I'm pretty pleased with this setup, my son and the neighbor kids are getting a lot of use out of this. Since i didn't see any instructions online for installing this without trees, here is what I did. After some trial and error, I used 4x6 posts (30 feet apart) and installed them with posthole diggers as deep as I could, about 3.5 feet. I did not use concrete. The 6 in side faces the ninja line. I used 30 inch ground anchors on either side of the posts for lateral support (mcmastercarr part 6300A26) and connected them to the posts with eye bolts (3018T28) tensioners (2998T54) and steel cable. All the parts were rated for lifting at least 1200 pounds. I've had this installed for a few weeks with daily use and it is holding up. I check it everyday to see if the posts are still level, they flex when in use, but stay level below the lateral anchors.
...
show more
Reviewed in the United States on December 29, 2018 by dhgb256
Gave this to my 5 year old for his birthday. He absolutely loves it even though he is having a hard time getting used to all of the movement as he tries to go from object to object. Definitely different than the monkey bars that he is used to. But as my son says "Ninja never quits" he will stick with it until he is able to get it done. The reason for the 4 stars instead of 5 is that after one use the line is fraying where it goes through the ratchet tie down. I own a truck and have hauled a lot in the bed using ratchet tie downs and have never had an issue with those so I am not sure what caused this line to do it and only after one day of use none the less. I have included a photo so you can see what I am talking about. It isn't major but more than it should be in my opinion.
...
show more
Reviewed in the United States on September 29, 2017 by DIY'er DIY'er