KEEP HOT AND COLD FOR HOURS: double wall vacuum insulated stainless steel travel coffee mugs for maximum temperature retention, keeps hot / iced beverage for hours (45°C/113°F) COOL TO TOUCH with hot liquids; SWEAT PROOF with cold EU STANDARD SILICONE RING & STAINLESS STEEL INTERIOR & EXTERIOR: durable & food contact safe SPILL PROOF LID: solid screw on design for tight sealing MATTE FINISH: easy gripping & fingerprint proof