Alpinestars Tech 5 Boots-Red/White/Black-10 Upper constructed from innovative, abrasion-resistant microfiber with synthetic polymer on toe box. Main microfiber material offers high levels of water-resistance, durability and improved weight-saving. Material ensures consistent fit for long term usage and is easy to maintain and clean. Redesigned instep and Achilles accordion flex zones made from lightweight microfiber for superior comfort, control and support. Contoured advanced polymer core structure envelopes upper boot for structural integrity and abrasion resistance while allowing excellent levels of controlled flex. Innovative buckle closure system incorporates polymer and fiberglass buckle arms and high-impact aluminum bridge closures for durability and weight-saving. Buckle system features memory and a quick release/locking system with self-aligning design for easy, precise closure and improved riding performance and security. All buckles are easily replaceable.