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Hydro Flask
40oz Wide Mouth Trail LW Flex Cap Water Bottle

3.8175182481751824 out of 5 stars
137 Reviews
$54.95
Color:Obsidian

Size:

Quantity

Only 3 In stock


Why We Like The Hydro Flask 40oz Wide Mouth Trail LW Flex Cap Water Bottle

The Hydro Flask 40oz Wide Mouth Trail LW Flex Cap Water Bottle sheds 20% of the weight of other bottles in its class yet retains all the benefits of a stainless-steel construction. The double-wall vacuum insulation keeps contents cold for 24 hours or hot for 12 hours, while the pro-grade steel holds up against rugged terrain and doesn't transfer any flavor to our bevvy, giving us perfectly crisp sips of H20 on the go.


Details

  • Lightweight steel bottle for staying hydrated on the road and trail
  • Stainless steel construction is durable and doesn't impart taste
  • Temp Shield double-wall vacuum insulation holds temp of beverage
  • Leakproof lid features a pivoting, perforated strap for a comfy carry
  • Item #HYFZ059
Material
18/8 stainless steel
Volume
40oz
Lid
Flex Cap, perforated strap, leakproof
Dimensions
12.3 x 3.3in
Claimed Weight
12.96oz
Activity
casual, hiking
Manufacturer Warranty
limited lifetime

What do you think about this product?

Overall Rating

4 based on 137 ratings

Review Summary

1 Stars - 19 reviews
2 Stars - 12 reviews
3 Stars - 20 reviews
4 Stars - 10 reviews
5 Stars - 76 reviews

Customer Images

Here's what customers have to say

The product is generally well-received, with customers appreciating its lightweight design, large capacity, and ability to keep water cold. However, some users have noted that it is taller than expected and doesn't fit well in cup holders. There are also mixed opinions on the insulation and durability, with a few customers reporting issues with denting and reduced performance compared to the regular model.

AI-generated from the text of customer reviews.

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4 out of 5 stars

June 16, 2025

Great bottle!

[This review was collected as part of a promotion.] This is a great bottle that keeps my water cold and crisp! It is too large to fit in the cupholder of most vehicles, so keep that in mind if you're planning to use this on the go.

Elizabeth W.
hydroflask.com

Originally reviewed on hydroflask.com

1 out of 5 stars

April 24, 2025

Rusting from the inside

Bought 2 of these for the trail and within a year, one is rusting from the inside. Will not be purchasing Hydroflask ever again.

NM
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

April 23, 2025

Best water bottle

[This review was collected as part of a promotion.] Excellent product! The Trail Series is one of the best water bottles.

Carmen M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

March 6, 2025

Great Bottle

Loving this bottle so far. Definitely lighter than previous bottles. Seems very well made and should be durable.

Gary R.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

January 28, 2025

Absolutely Love It!

[This review was collected as part of a promotion.] For a long time I wanted to find a non-insulated stainless steel bottle. Non-insulated because I didn’t want the extra weight of the double wall, and stainless steel to avoid microplastics. Surprisingly, this was hard to find. But then I discovered the trail series from Hydroflask, and it was light enough with the added bonus of being insulated! Really impressed with the bottle. It’s just a such a simple and elegant design. I was initially concerned with not being able to to put it in the dishwasher, but the lack of little ledges and catches really makes that a non issue. It’s easy to clean, has a great form factor, and lightweight. It’s everything I knew I wanted and even some of what I didn’t know I wanted. Absolutely love it!

Christopher H.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

January 8, 2025

Needs a cap with a straw

[This review was collected as part of a promotion.] I need a cap with a straw that is long enough for this new design, I dont see one online that I can buy.

Kinsey M.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

December 30, 2024

Favorite One

I love this bottle! I am field sales and spend my day in the car driving long distances. After learning how much water I should be consuming I bought one of these for the volume. It fits one of my cup holders in the car which turns out is pretty important for what I need. I add electrolytes, magnesium and creatine and no issues with interior degradation. Its lightweight for the size so easier to carry to the car and maneuver when driving. I added the twist top (which I also love because it fully disassembles for cleaning) which is important because the water runs fast towards you and I was dousing myself on a regular. I'm seriously considering a second one to replace another Hydroflask that doesn't fit the cup holder and is more of a hassle to manage when driving. There is no boot option but thats ok for me and if you were to stuff it in a sack for hiking you'd regret having a sticky boot.

Sarah
hydroflask.com

Originally reviewed on hydroflask.com

1 out of 5 stars

November 20, 2024

Won’t buy again.

[This review was collected as part of a promotion.] Never dropped…. Within the first couple months insulation failed. Had to return on my dime which was about a third of the cost.

Geofrey E.
hydroflask.com

Originally reviewed on hydroflask.com

5 out of 5 stars

October 31, 2024

Trail Series

[This review was collected as part of a promotion.] The "Lightweight" feature is awesome when every oz. counts, on long hikes or backpacking.

Connie L.
hydroflask.com

Originally reviewed on hydroflask.com

3 out of 5 stars

October 19, 2024

Straw is too short

It’s a big fail that Hydroflask couldn’t produce a straw that is suitable for this taller container. They put marketing spin this fail saying that when you can’t get anything more, it’s just a sign to refill. That’s absurd. Make a longer straw. Offer it free to owners of this product.

Adelina D.
hydroflask.com

Originally reviewed on hydroflask.com