SmashPad™ FR Welding Mat SUPPORTIVE COMFORT Helps to alleviate aches and pains associated with kneeling, sitting, leaning, and more during long welding runs. Inherently flame-resistant fiberglass outer shell resists sparks Red 32 oz. silicone-coated fiberglass top surface is twice as thick for extra protection against sparks and spatter, with greater tear and abrasion resistance