This pair of size 11, Wopper welding gloves include a 3M(TM) Thinsulate(TM) C100 lining and is stitched with Kevlar(R) thread for extra durability. They have a lightweight, split-cowhide leather palm and gauntlet cuff with leather gore. These gloves are Gunn cut with flexible, wing-style thumbs, and have a 1 1/2-inch leather band seam protector with welted seams.