Hydro Flask 40 oz Wide Mouth Insulated Stainless Steel Bottle — Ivory, TempShield® Cold 24H, Flex Straw Leakproof

The Hydro Flask 40 oz Wide Mouth Bottle with Flex Straw Cap is an insulated, stainless-steel water bottle designed for leakproof, on-the-go hydration that keeps drinks cold up to 24 hours.

This roomy 40-ounce bottle pairs TempShield® double-wall vacuum insulation with a closeable Flex Straw Cap and a comfortable loop handle for single-handed sipping. Built from pro-grade stainless steel and finished in ivory, it accepts ice cubes, resists flavor carryover, and is dishwasher safe for easy maintenance. The straw cap seals shut to prevent spills, making it convenient for backpacks, gym bags, and daily commutes.

How long will drinks stay cold in this Hydro Flask?

Thanks to TempShield® double-wall vacuum insulation, cold beverages remain chilled for up to 24 hours under normal conditions. The wide-mouth design does not compromise insulation performance while allowing large ice cubes for longer cooling.

• TempShield® double-wall vacuum insulation
• Maintains cold temperatures up to 24 hours
• Wide mouth accepts ice cubes for extended cooling

Is the Flex Straw Cap leakproof and easy to use?

The Flex Straw Cap closes securely to prevent leaks when not in use and opens easily for one-handed drinking. Its flexible loop handle makes carrying simple and the cap is designed to be disassembled for cleaning.

• Closeable straw cap locks to prevent spills
• One-handed open/close operation for convenience
• Flexible loop handle for comfortable transport

Can I put this bottle in the dishwasher and will it retain flavor?

The bottle and its removable straw lid are dishwasher safe, making upkeep straightforward. The stainless-steel interior resists odor and flavor retention, so past beverages won't affect the taste of fresh drinks.

• Dishwasher-safe bottle and disassembled lid parts
• Pro-grade stainless steel resists flavor transfer
• BPA-free materials for safe daily use

Which lids and accessories are compatible with this wide mouth bottle?

The 40 oz Wide Mouth bottle is compatible with Hydro Flask’s range of Wide Mouth lids and caps, giving you flexibility to swap to a chug or coffee cap as needed. It also fits select bottle boots for added protection and traction.

• Fits all Hydro Flask Wide Mouth caps and lids
• Compatible with Flex Chug, Flex Sip Coffee, and Stainless Flex Cap
• 32–40 oz Flex Straw Bottles work with Medium Bottle Boot

Who this bottle is for: active people who want a large-capacity, durable water bottle that stays cold all day and won’t leak in a bag. It’s ideal for long commutes, outdoor activities, gym sessions, students, and anyone who prefers hands-free sipping with a reliable, easy-to-clean straw cap. If you need a high-capacity insulated bottle that combines practical everyday features with long-lasting temperature retention, the Hydro Flask 40 oz Wide Straw in Ivory is a versatile choice.