Fill it. Flip it. Sip it.
The Hydro Flask 40 oz Wide Mouth Bottle with Flex Straw Cap is built for big hydration days and easy, one-handed drinking. With a wide opening that’s ice-cube friendly and a straw cap designed for sipping on the move, it’s a reliable companion for workouts, hikes, and everyday adventures.
TempShield® double-wall vacuum insulation keeps beverages cold for up to 24 hours and hot for up to 12 hours, while eliminating condensation. Crafted from durable 18/8 pro-grade stainless steel, this bottle delivers pure taste with no flavor transfer and stands up to daily use.
The Color Last™ powder coat keeps the bottle slip-free and colorful, and the Wide Mouth design fits most backcountry water filters—making it just as trail-ready as it is commute-ready.
Best For
All-day hydration
Workouts, sports, and fitness
Hiking and outdoor adventures
One-handed, straw-style sipping
Key Features
Flex Straw Cap:
Insulated and leakproof when closed for easy, on-the-go drinking.
TempShield® Insulation:
Double-wall vacuum insulation keeps drinks cold up to 24 hours and hot up to 12 hours.
Wide Mouth Opening:
Easy to fill and ice-cube friendly.
Durable Construction:
Made with 18/8 pro-grade stainless steel.
Pure Taste:
Won’t retain or transfer flavors.
Filter Compatible:
Fits most backcountry water filters.
Dishwasher Safe:
Easy to clean and maintain.
Safe Materials:
BPA-free.
Important Use Information
Flex Straw Cap not intended for use with hot liquids
Not for use on a stove, in a microwave, or freezer
Specifications
Capacity:
40 oz
Product Diameter:
4.00 in
Product Height:
11.70 in
Product Weight:
1.05 lb
Style Variants
Available Colors: Navy, Shale Gray
Size Reference for Hydro Flask Mouth with Flex Straw Cap
Available Sizes:
