Double-wall, vacuum-insulated travel mug keeps beverages hot for 6 hours or cold for 20 hours.The 590ml AUTOSEAL West Loop Stainless Steel Travel Mug also features patented AUTOSEAL technology for 100% spill-proof and leak-proof performance.All of the features you love in the original AUTOSEAL West Loop Stainless Steel Travel Mug - now in a larger, 590ml size! Double-wall, vacuum-insulated construction keeps beverages hot for 6 hours or cold for 20 hoursPatented AUTOSEAL technology for 100% leak-proof and 100% spill-proof performanceOne-handed operation for convenient drinking during activities - just press the button to sip; release the button to automatically seal the mugDouble-wall construction eliminates sweatingLid is top-rack dishwasher safe for easy careSleek design fits most car cup holders for travelMade from 100% FDA-approved materialsVolume: 590mlDimensions: 8.9cm wide at the widest point of the lid x 23cm H x 7.4cm diameter at base