Tasmanian Tiger Tac Muff Hand Warmer Black. It is made of 700DEN Cordura on the outside and padded with a fleece on the inside. Between the padding and outer layer is an additional layer that not only keeps your hands warm but it doesnt compromise on durability and longevity. It has an elastic bungee cord where you insert your hands that tighten and prevent heat loss. You can use it with or without gloves. Specifications for Tasmanian Tiger Tac Muff Hand Warmer: Manufacturer: Tasmanian Tiger Size: One Size Fabric/Material: Cordura 700 den/T-Microfleece 100D/T-Insulation Weight: 8 oz Package Contents: Tasmanian Tiger Tac Muff Hand Warmer Tasmanian Tiger TT-7676-040: Tac Muff Hand Warmer Black