Thermo mug 400 ml BrandCharger Vortex Calix, features a screw-on, leak-proof lid, designed to handle frothy beverages, the cap includes a carrier loop for attaching an optional crossbody belt, features stainless steel double walls that slow down the release of temperature to the surroundings, functioning like a thermos, keeps temperature of cold beverages for up to 12 hours or hot beverages for 4 hours, dishwasher-safe, product made from recycled 304 stainless steel and tritan