This style in our Endura lineup features the same durable 1.4 mm premium side-split leather palms and 9 oz. cotton twill backs that all the others have, but with a highly cut-resistant liner. Gunn-cut pattern moves the finger seams out of the wear area, so liner lasts longer. composite-knit liner is rated ASTM cut-level 4 and features a blend of composite filament fiber securely wrapped with Kevlar, for a boost in cut resistance that wont break down or come through to hands. Gloves withstood 2850 grams of cut force during testing.Puncture resistance is ASTM level 4. Super-strong Kevlar thread is used for seam integrity. Band top safety cuffs are two-ply, washable polyethylene, and allow for easy donning of gloves. Elasticized at back of wrist for snug fit. Kevlar is a registered trademark of E.I. du Pont de Nemours and Company.