Aramid provides excellent cut protection and heat resistance for the wrists and arms. Aramid fiber blend is inherently flame resistant, sleeves can withstand heat up to 640° F (337°C) without supporting a flame. Integrated thumb hole allows protection all the way to the knuckle without sacrificing dexterity. Lightweight, seamless construction for a soft and comfortable feel. Launderable for extended life and to reduce replacement costs. Made in the USA