Hydro Flask Standard Mouth 21 oz Insulated Stainless Steel Water Bottle with Screw Cap

[This review was collected as part of a promotion.] I like the color and style of the 21 oz Standard Mouth, but the claim that it keeps water cold for at least 24 hours just isn't true. At best it holds temperature for 8–12 hours, which isn't worth the price. I've owned cheaper brands that actually kept my water cold for a full 24 hours. When I raised the issue, they had me run a test to check whether the bottle was defective. It passed the test, but it still doesn't keep drinks cold the way it's advertised to.

[This review was collected as part of a promotion.] Thank you for helping me process my warranty for my damaged flask. The whole process went very smoothly and I appreciate it so much.

[This review was collected as part of a promotion.] This is the perfect size for a day on the river, a trip to town, a day at work. Easy to carry and refill. Fits in the cupholder too.

[This review was collected as part of a promotion.] Hydro Flask bottles keep liquids cold. The wide mouth bottle allows for easy access for drinking. The bottle fits in my car cup holders and lunch box. The bottle is sturdy and keeps its shape! Highly recommend the purchase if you are looking for a water bottle.

I have several Hydro Flask bottles and this one is the one I pick up when I'm going to travel as it fits perfectly in my backpack. It also fits pretty well in a cupholder. It's really convenient.

[This review was collected as part of a promotion.] I really like the design and the blue color of the bottle. Unfortunately, after being in contact with another object (which was metallic) in my backpack, the color was damaged which is a shame because I only have this bottle for less than 2 weeks. I'll keep it but it's a bit disappointing that the color starts to wear off so quickly.

[This review was collected as part of a promotion.] Gasket is easy too remove from cap to wash and clean. I like that it's simple and not like any other water bottles that have too many nonremovable/removable parts.

[This review was collected as part of a promotion.] I bought a 21 oz Standard Mouth flask to replace hubby's that he lost on a train ride. We take them with us on weekend trips and vacations. Love them!