Hydro Flask 40oz Wide Mouth Flex Straw Bottle - Oat: Double-Wall, BPA-Free, Leakproof
$42.49 reg $49.99
Clearance save $7.50 (15% off)
ColorOat
Capacity40oz
In Stock
Eligible for registries and wish lists
At a glance
About this item
Additional product information and recommendations
Related Categories
Discover more options
- $29.99 - $33.74reg $39.99 - $44.99 Sale4.4 out of 5 stars with 2922 ratings
- $29.99reg $39.99 Sale4.5 out of 5 stars with 1268 ratings
More to consider
Guests also viewed
- $29.99 - $33.74reg $39.99 - $44.99 Sale4.4 out of 5 stars with 2922 ratings
Guests are saying
The water bottle is appreciated for its stylish design, convenient flex straw cap, and ability to keep drinks cold for several hours. Guests enjoy its size and color options, making it a great choice for daily hydration needs. However, some guests have experienced issues with insulation performance and straw functionality. Overall, it is a popular choice for those seeking a reliable and attractive water bottle for various activities.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.4 out of 5 stars with 4465 reviews
52% would recommend
40 recommendations
5 out of 5 stars
14 May, 2026
originally posted on hydroflask.com
Great choice
[This review was collected as part of a promotion.] I got this to replace my 32 oz hydroflask and I love it! The extra size is very convenient and the tonal lid is a very nice touch. I would recommend to a friend every time!
5 out of 5 stars
14 May, 2026
originally posted on hydroflask.com
Winner
[This review was collected as part of a promotion.] My daughter loves her water bottle she gets so many compliments on her water bottle perfect color and I got it engraved for her.
2 out of 5 stars
12 May, 2026
originally posted on hydroflask.com
Not great
[This review was collected as part of a promotion.] It looks great but the straw seems to draw in air half the time leaving a poor experience. Must be why it was half off
5 out of 5 stars
11 May, 2026
originally posted on hydroflask.com
Better than expected
[This review was collected as part of a promotion.] The color is so cute, the customization is a perfect touch.
5 out of 5 stars
11 May, 2026
originally posted on hydroflask.com
The best brand in water bottles!
[This review was collected as part of a promotion.] Amazing water bottle. I’ve been using hydro flasks for over 10 years now and will continue to do so.
5 out of 5 stars
7 May, 2026
originally posted on hydroflask.com
Great flask
[This review was collected as part of a promotion.] My kids won’t drink water unless it’s in a Hydro Flask
5 out of 5 stars
7 May, 2026
originally posted on hydroflask.com
Perfect for indoor lap swimming
I swim 2-3x per week for about an hour at an indoor pool and I really needed a water bottle large to hold enough water for me to not need to get out of the pool to refill. This bottle has been perfect for that; I can fill up with cold water and it stays cold for the entire time (I was using an BPA-free plastic bottle and the water would get warm after a while) and the straw also helps with taking smaller pulls of water so that I don't overdrink either. Highly recommend
5 out of 5 stars
6 May, 2026
originally posted on hydroflask.com
Son loves it
[This review was collected as part of a promotion.] My son loves it! He just wished he didn’t need the internal straw.
5 out of 5 stars
4 May, 2026
originally posted on hydroflask.com
Size matters
[This review was collected as part of a promotion.] I purchased 2 of the 40oz Hydro Flask and love it and so does my husband. I hiked 5 miles last weekend in the desert and it was just enough to carry me through. I chose this company because they support SaveUSFS. org and they have excellent products.
5 out of 5 stars
2 May, 2026
originally posted on hydroflask.com
Love our bottle!
[This review was collected as part of a promotion.] This is a perfect size for being out and about. We leave it in our car while doing errands or day trips and we know when we get back to the car we get to have a nice cool drink. It’s a bit heavy to carry with us at times (will have to think about getting the new micro sized ones). Love that Hydroflask thought of making small sized bottles with the same insulating properties. These bottles takes a beating cuz we use them nearly everyday and they hold up really well.
1 out of 5 stars
Thumbs down graphic, would not recommend
30 April, 2026Verified purchase
(no review title)
Very cheap version. Rusted easily, external mouth piece / straw is low quality
4 out of 5 stars
30 April, 2026
originally posted on hydroflask.com
Great purchase
[This review was collected as part of a promotion.] I love the product. Keeps items cold for a long period of time even without adding ice. If the item is previously chilled. Would definitely purchase again
5 out of 5 stars
28 April, 2026
originally posted on hydroflask.com
The best waterbottle! The water
[This review was collected as part of a promotion.] The best waterbottle! The water flow is great and it’s lightweight!
5 out of 5 stars
21 April, 2026
originally posted on hydroflask.com
Fantastic water bottle
[This review was collected as part of a promotion.] Fantastic water bottle, I had purchased 2 but lost one immediately to my wife. as it added Benefit our icemaker makes craft ice balls. They fit perfectly and stay well over 24 hours. Now I just have to find some stickers to differentiate between the bottles. I had decided to purchase because I had received a 24 oz mug from my daughter as a gift , and from day one, I didn’t want to use any other mug. Thanks so much. !!!
1 out of 5 stars
Thumbs down graphic, would not recommend
13 April, 2026Verified purchase
0/10
Honestly the bottle is so cute but it doesn’t work properly I was working out and water kept spilling out of it when I’d drink and so I kept the straw lid thing open and when I went to close it it flickered water everywhere !!! It was so embarrassing. The bottle is cute but unfortunately I had to return it and will have to cave into a owala
5 out of 5 stars
9 April, 2026Verified purchase
(no review title)
Very smooth operation of the straw and handle feels nice in your fist. Love it
1 out of 5 stars
9 April, 2026Verified purchase
(no review title)
they sent the wrong lid. im looking at the reviews and looks like its common for them to do that. clearly says with straw. do better target
2 out of 5 stars
8 April, 2026
originally posted on hydroflask.com
Not the same
[This review was collected as part of a promotion.] Returning customer and this time the bottle is up to par what it use to be. Does not keep bottle cold for the duration of what it’s stated
2 out of 5 stars
7 April, 2026
originally posted on hydroflask.com
The top leaks
[This review was collected as part of a promotion.] The top on this bottle leaks even when crank it down tight. Seems like the older design was more leak proof.
1 out of 5 stars
Thumbs down graphic, would not recommend
6 April, 2026Verified purchase
(no review title)
Don’t use shipping all my items arrived damaged.