The Black Stallion KS-18T-YL is the DuPont Kevlar Knit A3 Cut-Resistant 18" Inch Sleeves with Thumb Slot which offer Kevlar cut & flame resistance. DuPont Kevlar is lightweight & incredibly durable. In addition to being extremely cut resistant, Kevlar is inherently flame resistant. Kevlar will not ignite, melt, or degrade in heat. Thanks to it's double-layer DuPont Kevlar knit, the KS-18T-YL gives 18 inch wrist to bicep protection and has a ANSI Cut Level A3 (Light-Medium Protection). The thumb hole keeps sleeve from sliding up when worn.