Husqvarna chain saw protective chaps contain PVC coated denier polyester with Tek warp protective layers designed to reduce the risk or severity of an injury, and give the operator extra reaction time when contact is made by a moving chain. The cut retardant material is designed to "pull" apart and clog up the sprocket system of the chain saw and slow or stop the chain from rotating depending on the speed of the chain, length, angle of contact, and power of the saw. Protective chaps should never be considered safer than proper chain saw handling safety procedures. Husqvarna chaps also feature adjustable waist sizes, acetyl Delran buckles, pockets for gear, and are cold water washable. They are UL certified and meet ASTM f1897, ANSI z133.1, And OSHA regulation 1910-266.