Retro jeans style five pocket leather pants. Features Washed goat leather construction Certified to class AA HI-ART® reinforcement at hips & knees Triple Stitched Adjustable Level 2 certified protectors at hips & knees Long connection zipper to jacket HI-ART HI-ART is a proprietary material developed by Halvarssons. The material is especially used in exposed areas to increase abrasion resistance. It makes leather 200 per cent stronger & textiles no less than 500 per cent stronger. Halvarssons is extremely proud of their invention & of being alone in offering you this solution. Triple-Stitching A garment is never stronger than its seams. It makes no difference how good the material is if the seams break. Following a multitude of tests, Halvarssons has found a technique that provides maximum durability. They use a well-balanced stitch density, a heavy-duty, hard-wearing thread in triple stitched seams in exposed areas.