DETAILS. These chaps contain material designed to reduce the risk or severity of an injury and give chainsaw operators extra reaction time. The cut-retardent material is designed to pull apart and clog the sprocket system of the chainsaw to slow or stop the chain completely. - Type A Kevlar fibre fabric with nine layers (120g/m2), Class I, 20M/sec. - UL certified, ASTM F 1897-08, Type C eight layers (155g/m2). - Certified by European laboratory to CE Standard EN-381-5. - Adjustable waist with quick release buckle. - Adjustable thigh strap and two adjustable calf straps