TECHNOLOGY: TempShield™ double-wall vacuum insulation helps eliminate condensation and keeps beverages cold up to 24 hours Color Last™ powdered 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 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: 32 oz.