Nowadays, we always carry our phones with us, but they still don't handle the cold well. Coxa's Thermo Case protects your phone from dust, dirt, and sweat, while providing an insulating layer that mitigates temperature fluctuations and creates a protective layer of warm air between the phone and, for example, the outer layer of your jacket. - 5 mm thick foam insulation - Dimensions: 189 x 100 mm - Outer material: durable 210-denier nylon with polyurethane coating - Weight: 28 g - 4 mm thick polyester cord - Aluminum spring hook