This exclusive HeartBox x Swig Lowball offers triple insulation technology to keep your drinks cold for up to 9 hours and hot up to 3 hours. With its sleek navy blue matte appearance and handy size, it's the perfect way for Dad to enjoy his coffee or chilled drinks on the go. Details: 12 oz. vacuum-insulated stainless steel lowball Keeps drinks cold for up to 9 hours and hot up to 3 hours 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 3.5” W (lid included); base 3.5” in diameter; 0.4 lb when empty