1.2-1.4mm full-grain leather for excellent abrasion resistance. Multiple-stitched main seam construction for maximum tear resistance. Ergonomically placed stretch panels for optimal flexibility. Removable CE-certified soft protectors in elbows and shoulders. Soft neoprene border along cuffs and collar opening. Chest pad compartment with PE protection (Stella Bionic Chest Guards available separately). YKK Semi Auto Lock zippers. Removable thermal vest liner. Connection zipper allows attachment to select Alpinestars leather or textile pants. Hook-and-loop waist adjusters. Back protector compartment with PE padding (CE-certified RC back protector available separately). Micro-injected logos.