Hydro Flask 24 oz Standard Mouth Flex Straw Cap - Stainless Steel Reusable Water Bottle - Vacuum Insulated, Dishwasher Safe, BPA-Free, Non-Toxic About this item TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours Made with 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavor transfer Flex Straw Cap is leakproof when closed, to transport without worry Flex Strap is easy to transport and comfortable to carry Honeycomb Insulated cap for maximum temperature retention Color Last powder coat is dishwasher safe, keeping your bottle slip-free and colorful Fits most backcountry water filters Cup holder compatible BPA-Free & Toxin-Free