Features Airy due to large mesh fabric Width adjustable (waist, leg cuffs) Ribbed stretch at knees & seat Elastic outer fabric (placket) Connecting zipper Anti-slip material on seat 5 pockets, including 2 waterproof cargo pockets Safety Removable YF® protectors (knee/height adjustable) SAS-TEC hip protectors retrofittable Safety seams (ISO 4916) Material Durable polyester fabric Hitena® Dobby Nylon material reinforcement on knees & shins Breathable mesh lining Sizes 34-48 are standard sizes 19-23 are short sizes Hitena® Hitena® is an abrasion resistant textile material made from highly twisted yarn. It is a very strong material, yet has a soft handle, is consistent in shape & lighter than ordinary polyamide.