Kevlar Cut protection sleeves by Radnor for cut resistance protection for the wrist and arms. These 18" kevlar sleeves are made from Kevlar brand fiber and offer cut and abrasion resistance with some minimal heat resistance. These 18 inch kevlar cut protection sleeves come with a "thumb slot" versus without a thumblsot. Kevlar sleeves with a thumbslot are preferred by most users for the additional protection, comfort and fit.