Kevlar-Polyester Chainsaw Protection Safety Chaps *Sized by User’s Height* These Kevlar-Polyester chaps are the lightest, most comfortable chaps ever produced. At only 2.05 pounds (regular length) you?ll barely know you have them on. The polyester knit holds the Kevlar strands in place. The orange cordura nylon outer shell resists snags and tears plus is water, grease, and oil repellent. These chaps are UL classified and meet class A ASTM F1897 specifications for leg protection and 11BF (U.S.A.) American standards. The use of chain saw chaps is required by ANSI standards Z133.1 (2006) for all ground tree care operations. Sizing Chart: Regular: 5′-8″ in Height Long: 6′ & Under X-Long: 6′ & Over2X-Lone: 6′-3″& Over