A fan favorite.
From epic road trips to endless hours at the beach, our 40 oz Wide Mouth with Straw Lid bottle keeps you well-hydrated from sun up to sun down. And our Color Last™ powder coat is dishwasher safe for even more convenience. Cold stays ice cold for 24 hours, and hot stays wickedly hot for 12 —just like always.

TempShield™
Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.


Pro-Grade Stainless Steel
Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer - and the durable construction stands up for whatever life brings.
Color Last™ Powder Coat
Our proprietary powder coat is dishwasher safe, and your bottle stays slip-free and colorful, no matter where you take it.

- TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- Ideal size for all-day hydration
- Fits most backcountry hydration filters
- BPA-Free and Phthalate-Free
- Dishwasher safe
- Compatible with our Wide Mouth Flex Sip™ Lid
- Straw Lid is not intended for use with hot liquids and is not leakproof.
- Lifetime Warranty
Product Benefits
Size & Dimensions
40 oz | |
---|---|
Volume | 1,182 mL |
Diameter | 3.55" |
Height | 11.7" |
Weight | 16.8 oz |
Lifetime Warranty
We stand behind our products.
Hydro Flask guarantees this product with a limited lifetime warranty against manufacturer defects.
Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:
-
151 Nonprofits supported nonprofits.
-
$2.5 million Dollars donated donated.
-
68,822 Bottles donated bottles.
I have the 32oz and it does not fit in the car cup holder. The 40oz looks slimmer, does it fit in the car cup holder?
does the 40 oz bottle fit in a standard cup holder
40 oz wide mouth bottle w/straw lid….. does it leak if it has been knocked over or on its side?
Does this fit in an average car cup holder?
Does the 40oz w/ Straw Lid also come with the standard cap that other bottles come with?
Does the 40 oz straw lid come with a straw?
Can I put a different wide mouth lid on the kids bottle to make it safe for hot drinks? I understand the straw is not safe for hot drinks, but is the bottle itself?
I have a 40 oz hydro flask that came with a wide mouth straw lid. Can a wide mouth flex cap work on it or does it only fit a wide mouth with the straw?
Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:
-
151 Nonprofits supported nonprofits.
-
$2.5 million Dollars donated donated.
-
68,822 Bottles donated bottles.