Keeps drinks cold for 24 hours Leakproof when closed Dishwasher safe Pure taste with no flavor transfer TempShield double-wall vacuum insulation Durable stainless steel construction Spring-assisted flip-top chug spout Whisk ball for easy mixing, even with thick supplements Removable gasket for easy cleaning Ergonomic shape for a comfortable grip Shake up a perfect smoothie, protein or supplement shake. The Insulated Shaker Bottle features an ergonomic design and a leakproof, flip-top chug spout. An internal whisk ball mixes it right every time and the insulation helps keep contents cold for up to 24 hours. The Shaker Bottle is not intended for hot or carbonated beverages.