Features Durable Dyneema® Denim UHMWPE (ultra-high molecular weight polyethylene) outer shell Dyneema® denim is stronger than steel KEVLAR® from Du Pont ™ strengthens knees, hips & buttocks including Trilobite® Premium protectors in the knees & hips certified according to EN 1621-2, height-adjustable in the knee area Stretch in the crotch, waist & knee area YKK zippers Ventilation zips five outer pockets extra high waist on the back double belt loops in front high abrasion & tear resistance