This 18 oz compact bottle combines double-wall vacuum insulation with durable 304 stainless steel to keep drinks cold up to 20 hours. Featuring a flip-straw lid and leakproof design, it's built for active days and easy transport. Features Double-wall, vacuum-insulated canister keeps beverages cold Constructed with 304 food grade stainless steel Fast, easy one-handed operation Non-slip protective silicone boot Dishwasher safe (hand washing recommended)