1.0 MM thickness Cowhide Leather; Waterproofing Added In Tanning Process Creates Water Repellency In The Leather; Winged Thumb Design; Patented Double Wedge Design (Extreme Curved Finger); Shirred Back (Elastic Stretch Band For Secure Fit); Purpose Placed Gussets For Longer Lasting Construction; Minimized Seams For Reduced Stitching Wear; Ergonomic Design Reduces Hand Fatigue And Increases Comfort; Style #D357