Worn over the back of a welding glove, PowerWeld back hand pads provide added protection while welding. The aluminized layer reflects radiant heat to keep the hand cooler while increasing the life of your favourite gloves by protecting them from sparks and spatter.; Features: Top layer of aluminized fiberglass, Middle layer of heat resistant ceramic wool fiber, Bottom layer of leather for soft comfort, Leather and elastic straps, Kevlar sewn, , 5.75” x 8” (145mm x 200mm), One size fits all