Apron Style Chainsaw Protective Chaps. Sleek, durable, lightweight, and comfortable chaps are oil- and water-resistant. Chaps feature a large side pocket , and a flip adjustment belt for a perfectly secure fit. These chaps meet the Leg Protection Requirements for OSHA 1910.266 Standards for Chainsaw Operators and ASTM F1897 Standard Specification for Leg Protection for Chainsaw Users (ASTM F1897-2008 39JY.) UL Classified.