Spidi Unit: racin-touring leather pants made with high-quality bovine Italian leather, thickness 1.1/1.2. They re equipped with removable Boomerang knee sliders & Multitech Serie protectors on knees & hips. The zipper allows connection with jackets while wide flex Tenax areas & special legs design make for a more comfortable experience. Features High resistant cowhide with 1.0-1.1mm thickness Kevlar based material Adjustable waist fastening Adjustable knee protectors Zipper joint jacket-trousers 50% waterproof garment Pants with fixed lining Hips / Knees protectors Racing sliders