For intermittent handling of hot objects up to 450ºF. Preshrunk, washable, 36 oz. heavy-duty terry cloth. Palm, back and thumb fully lined with vinyl to prevent oil and grease from penetrating to your hand. Palm and thumb fully cotton fleece-lined. Reinforced Kevlar thumb patch. Inside seams are pre-serged for improved seam strength and washability. Do not use in or around open flame.