This pair of size 13, Wopper welding gloves have a 3M(TM) Thinsulate(TM) C100 lining and are stitched with Kevlar(R) thread for added durability. They are Gunn-cut with a lightweight, split-cowhide leather palm and gauntlet cuff with leather gore. The gloves feature a 1 1/2-inch leather band seam protector with welted seams, and the wing-style thumb offers a flexible grip.