With interior aramid reinforcement, the Alpinestars Crank Denim is a hard-wearing & durable denim incorporating a versatile knee protection system to enable customization for differing leg lengths. Cut for comfort, on & off the bike, these jeans feature an anatomically optimized pre-shaped leg construction & are designed for daily commuting or urban riding. Features Tapered/comfort fit 13oz denim for a fashionable, long-lasting fit. Interior DUPONT™ Kevlar® fiber reinforcement in seat, hip & knee areas for abrasion & tear resistance in impact critical areas. Internal knee compartment allows adjustment of its certified knee protection to fit various leg lengths. Removable hip pad protectors with Velcro® attachments for secure, safe fit. Technical, pre-shaped leg construction for anatomically optimized riding fit. Customized detailing on metal YKK zip, buttons & rivets. Contemporary print design on inner waist & pockets. Leather belt patch & coin pocket.