These protective gloves should be use for safety protection whenever are handling Liquid Nitrogen (LN2), low temperatures, frozen laboratory. These Cryogenic gloves are made with 3 layers: 2 layers are composite material Nylon Taslan and PTFE, and 1 layer is cotton. They are made to fit all sizes and fit most hands. Glove length (finger to end): Wrist Length: 13 in., Mid Arm Length: 15 in., Elbow Length: 19 in., Shoulder Length: 27 in. Low temperature fit: -268°C~+148°C/-450°F~298°F. Cold and keep warm. These gloves should be stored in a dry place.