on qualified purchases at our brands now thru 5/4/26.
Highlights
Double-wall vacuum insulation
18/8 stainless steel construction
Insulated Flex Straw Cap
Wide mouth opening
About This Item
TECHNOLOGY:
TempShield™ double-wall vacuum insulation helps eliminate condensation and keeps beverages cold up to 24 hours or hot up to 12 hours
Color Last™ powder coat delivers non-slip grip and lasting color without cracking or fading
FEATURES:
Pro-Grade 18/8 stainless steel construction provides durability and prevents flavor transfer
Insulated Flex Straw Cap is leakproof when closed
Wide mouth opening easily fits ice cubes
Bottle fits most backcountry water filters
Color-matched logo and lid
Dishwasher safe
BPA-Free
Flex Straw Cap not intended for use with hot liquids
Not for use on a stove, in a microwave, or in a freezer
Hydration Capacity: 40 oz.
Brand : Hydro Flask
Country of Origin : Imported
Style : W40CFS
Web ID: 25HFLU40ZWDFLXSTRHYD
Capacity:
40 oz.
Material:
18/8 pro-grade stainless steel
Bottle Diameter:
4 in.
Bottle Height:
11.7 in.
Empty Weight:
1.05 lbs.
REVIEWS
4.3
99%
Recommended
844 Reviews
Lauren M.
2 days ago
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!
Paul N.
2 days ago
Still The Best.
[This review was collected as part of a promotion.] I sometimes fall for the lure of the cheap bottles but always come back to Hydroflask because they just work so much better.
John S.
1 week ago
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. !!!
Anthony N.
3 weeks ago
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
Richard B.
3 weeks ago
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.
Jackie F.
1 month ago
Not The Best Water Bottles
[This review was collected as part of a promotion.] I’m very disappointed in this product. Bought one for me and my daughter and when you use it it leaks down the front of you. .
Wade A.
1 month ago
Wide Mouth With Flex Straw Cap.
[This review was collected as part of a promotion.] The insulation works really well. It keeps my drinks cold for hours, which is perfect for long days at work or when I’m out training. I haven’t had issues with leaking, and the lid design is secure while still being easy to open and close.
Samantha D.
1 month ago
Beautiful Color! I Really Like This Water Bottle
[This review was collected as part of a promotion.] We've used HydroFlask bottles for about 10 years and love this brand for its ease of cleaning and clean third-party test results for its stainless steel.
Kailah C.
1 month ago
Absolutely Amazing
[This review was collected as part of a promotion.] This was the perfect water bottle for me. I absolutely adore it. Best purchase I’ve made so far.
Dean S.
1 month ago
40oz Hydroflask
[This review was collected as part of a promotion.] Excellent !!!!! Great for travel , hiking , kayaking & outdoor excursions…. . loving the personal logo !!
Robert G.
1 month ago
Hydro Flask - Changed The Size Of The Font
[This review was collected as part of a promotion.] This is our 5th or so order and we always have these engraved for family members. Helpful so boys don't lose them. The prior font fit with the size of the water bottle and was honestly very nice and stood out. LOTS of compliments and made them easy to spot. The current font is super small and doesn't look right on a 40oz bottle. We were surprised and disappointed at the change, especially since the price has gone up. Quality of the Bottles is still great, but wouldn't pay the extra for engraving again.
Rosemarie D.
1 month ago
Finally, A Good One
[This review was collected as part of a promotion.] I am getting rid of my lesser water bottles. This one really does keep cold liquid cold and the hot ones hot. Great for my round of golf.
Glenda D.
1 month ago
Keeps Water Cool
[This review was collected as part of a promotion.] Not my first Hydroflask, but the drinking straw lid, the straw does not stay open unless you put your thumb on the spout while drinking, otherwise you suck in air. I like how the spout snaps down into the lid.
CC F.
1 month ago
Amazing!
[This review was collected as part of a promotion.] I bought this for my mom to replace another brand of water bottle and she loved it! From the color to the lid, she raves about it!
Nicole R.
2 months ago
Love This Bottle
[This review was collected as part of a promotion.] This is my second 40 oz bottle. I really love the bottle and the newly designed flex straw cap is fantastic. Keeps my water cold and helps with my hydration goals.