Quench your thirst all day long with the Hydro Flask Wide Mouth with leakproof Flex Straw Cap, which provides ample capacity for continuous leak-free hydration. Its wider opening allows for quick and convenient refills while the Flex Straw Cap guarantees leakless sipping on the go. Thanks to the double-wall vacuum insulation, your icy cold beverages remain refreshingly chilled for up to 24 hours. To ensure optimal performance, please note that the Flex Straw Cap is specifically designed for use with cold drinks, and not intended for hot liquids. So, stick to refreshing cold beverages and keep yourself revitalized with Hydro Flask always by your side. TempShield double-wall vacuum insulation ensures your drink stays chilled for 24 hours Insulated Flex Straw Cap guarantees a leakproof experience/li> Wide Mouth opening allows easy fill up and accommodates ice cubes Fits most water filters for your backcountry adventures Hydro Flask's smart design is BPA-free and dishwasher safe Summer 2023 product Equipped With TempShield TempShield is Hydro Flask’s innovative double-wall vacuum insulation, which protects the temperature of contents and eliminates condensation. TempShield keeps liquids cold up to 24 hours and hot up to 12 hours.