UA Sideline 64 oz. Water Bottle

Style # 1261299
RM 89.40 RM 149.00
Height: Size:
    • Color: Black (001)
    • Size: One Size Fits All
    • OSFA
  • Availability: 
Due to limited quantities, only 1,000 allowed per customer.
The product can't be added to the bag
Height: Size: Fit: One Size Fits All
UA Sideline 64 oz. Water Bottle

Product DNA

As any serious athlete knows, hydration ain't no joke. Ready to handle anything from two-a-days to tournaments, this thing holds an impressive 64 ounces. Dependable insulation keeps your drink nice and cold, while the easy-access, flip-top lid keeps your water breaks running smooth.
  • Fold-down carrying handle with integrated fence hooks
  • Double-wall foam insulation
  • Locking flip-top lid with one-hand push-button operation
  • BPA Free
  • Manufactured by Thermos®, exclusive licensee of Under Armour®
  • PRODUCT UPDATE: Based on athlete feedback, we improved the way this water bottle is built so it performs even better—tell us what you think by submitting a review
  • Style #: 1261299
  • Capacity: 64 oz.
  • Imported
  • Imported

Review Summary

125 Reviews


Runs small Runs large


Min. Max.


Min. Max.

Keeps water cold but mold issue

Keeps water cold but having the same issue as others with mold on the silicone stopper. I have scrubbed at it and it does not come off.

Nice water tumbler

Great tumbler for sports. Water stays cold for the whole day. Wished the delivery was faster though. Otherwise, it’s a well made product and worth the money.


My son need a bigger jug so I went with this. Good name, good quality, I was wrong. First use and it leaked. What a disappointment

Lid leaks

Seems that the lid only tightens to a certain spot and is not tight enough to where it starts to leak when you start to drink out of it. It looks like this was done so that the mouth hole would be positioned in between the handle arms, which doesn’t allow the lid to be tightened enough for proper seal. I wish I had kept the receipt so I could have returned it. Or if there was a way to send back to Under Armour for a better replacement.

Mold issues

My whole family are athletes, and we love the product, but the only issue is the mold build up that it forms at the silicone part. No matter many times wash with bleach, mr. clean sponge and other products to sanitize, and clean it won’t come off. Do parts sell separately?

I love it!!!! Is there a straw that works??

Absolutely love this product! Wonder if there is a straw system for it, like would a camelback tube work???

Great except for the lid!

This water bottle started off amazing. Keeps water cold and secure and was just overall great!. Then mold started to build up under the lid on the silicon stopper. Washed it and it got semi clean. A week later and there was even more mold that can't be washed off, rendering this water bottle useless now! If the mold issue was fixed, this would be a 5 star watter bottle.

poor quality- fell apart

I purchased this water bottle two weeks ago for my daughter for camp. While she was standing in the line for camp the outer plastic layer of the bottle just slid off and fell to the ground. Very disappointing!

Water leaks out

First time I used this thermos in my golf cart, all the water leaked out. The spout was locked and closed and the cover was snuggly closed. Very disappointed.

Very Durable! Perfect for Football Team

Keeps the ice from melting. Keeps gulp slot covered so it stays sanitary during outdoor high school football practice. Very sturdy. Holds enough water for the grueling Kentucky football practice! A+ Will but again!