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Hydro Flask
21oz Standard Mouth Trail Lightweight Flex Cap Water Bottle

4.52054794520548 out of 5 stars
146 Reviews

Out of Stock

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Why We Like The 21oz Lightweight Trail Series Bottle

Delivering the same cold beverages we've come to expect from Hydro Flask while dropping a portion of weight compared to similar models, the Lightweight Trail Series bottle was designed for the long-haul. Though the walls are thinner and lighter than ever before, the pro-grade stainless steel material ensures a super sturdy design for rugged adventures while the leakproof cap uses aluminum pivots and a perforated strap for extra weight cut.


Details

  • Lightweight wide mouth water bottle for any adventure
  • Stainless steel walls reduce overall weight
  • TempShield insulation maintains temperature and stops condensation
  • Flex cap offers leakproof seal with easy-grab handle
  • Item #HYFZ02R
Material
18/8 pro-grade stainless steel
Volume
21oz
Lid
wide mouth
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

4.5 based on 146 ratings

Review Summary

1 Stars - 7 reviews
2 Stars - 6 reviews
3 Stars - 6 reviews
4 Stars - 12 reviews
5 Stars - 115 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

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5 out of 5 stars

August 30, 2024

Lightweight is great

[This review was collected as part of a promotion.] This has become my go-to bottle. I love the color, and the lightweight aspect is so nice. It’s also sturdy despite being lightweight; I’ve dropped it a few times with no dents!

Casey A.
hydroflask.com

Originally reviewed on hydroflask.com

4 out of 5 stars

August 25, 2024

Nice and light but dents more easily

[This review was collected as part of a promotion.] This bittle is great. It’s nice and light, but since it’s thinner, it also dents easier.

Cassandra B.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

June 12, 2024

Love my bottle💕

[This review was collected as part of a promotion.] Love the bottle! I’m confined to a wheelchair and it’s perfect in size❤️❤️.

Linda R.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

June 11, 2024

Good for hiking

[This review was collected as part of a promotion.] I like the lightweight feature especially if you do hiking with the kids. It makes it very convenient while it still holds the cold. I just wish it has more color options.

Olivia S.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

June 10, 2024

It works to keep hot 👍😊!

[This review was collected as part of a promotion.] I bought it to use with hot liquids. To test it I put hot black coffee in it at 9am - by 2pm it was still very hot - by 9pm it was still hot enough for me to enjoy. 👍😊. I have another hydro flask I use for cold.

Deanna M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

May 29, 2024

Mothers day

[This review was collected as part of a promotion.] Bought this for my mom who thinks the regular hydroflasks are too heavy-- she loves it, lightweight but still keeps cool

Maia L.
hydroflask.com

Originally reviewed on hydroflask.com

3 out of 5 stars

May 12, 2024

Soft-shell

[This review was collected as part of a promotion.] The outer shell on the bottle is too easily dented - after just a week my daughter’s bottle topples over because of dents to the bottom. Otherwise the bottle is fine, and keeps iced water cold all day.

user image
Nathan D.
hydroflask.com

Originally reviewed on hydroflask.com

1 out of 5 stars

May 8, 2024

Unsatisfied

[This review was collected as part of a promotion.] I was not send my flask and send out an email days later that my flask was not available? However it was back on your site to be sold again within few days ? Why was I not send mine and why was there no apologies or promise to have my flask send to me when it’s returned back in stock ?

Sanam L.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 21, 2024

It's great!

[This review was collected as part of a promotion.] All around a great water bottle! I love the colors (I ordered the Obsidian one). The lip of the water bottle is super smooth. I don't know why I expected differently, but it's great. The size and shape is very efficient as well. I use mine almost exclusively for work, so I just toss it in my backpack and because it's shaped similar to a plastic water bottle, it fits efficiently for how I use it. If there was a negative, opening and closing the bottle isn't effortless. The o-ring is substantial and you'll never get a leak, but that also means it may require more force to open and close it. Also, opening and closing it is a little awkward, in that the cap is narrow and awkward to grip. At the end of the day, it's a water bottle and does that job quite well! I would recommend this product!

Zach J.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 20, 2024

Perfect for hiking

[This review was collected as part of a promotion.] Love the lightweight construction and it keeps liquids cold as long as the standard construction. Nice and slim for a side pocket on a backpack. I purchased the Obsidian color and it's beautiful.

Janet H.
hydroflask.com

Originally reviewed on hydroflask.com