Designed with Climax™ - a high-temperature heat shield formed of silica aero gel inside a glass-fiber mat able to resist heat up to 3600°F. Will not burn, yet is hydrophobic, breathable, flexible, washable, environmentally safe, and easy-to-use. Snug elastic wrist to keep debris away from hand while protecting hands and lower arms from burns. Ideal for applicatons requiring the ultimate in thermal efficiency and productivity.