Keeps drinks cold up to 9 hours and hot up to 3 hours. Holds up to 12oz. Dishwasher safe, top rack only. Slip-free, scratch-free and noise-free silicone base. Includes BPA-free lid with removable slider for cleaning. Triple insulation technology: double-walled, vacuum-sealed and copper-plated. Condensation free and non-breakable. Constructed of 5mm 304-18/8 stainless steel. Measures 3.75" H x 4.5" W (handle included); base 3.5" in diameter; .5 lb when empty. Always use caution when handling hot liquids.