Contigo 2-pack 14oz Vacuum-Insulated Autoseal Travel Tumblers (Red/Silver) Sleek design fits car cup holders. Large 14 oz. capacity perfect for long commutes. Patented AUTOSEAL technology for 100% leak-proof and 100% spill-proof performance. Vacuum insulation keeps beverages hot for 5 hours or cold for 14 hours. One-handed operation for convenient drinking during activities - just press the button to sip; release the button to automatically seal the mug. Button toggles to lock, preventing accidental actuation when carrying inside bags or with other items.