Alpinestars Tech 3 Boots Contoured shin plate is injected with high modulus PU for a high level of impact and abrasion resistance Reinforced leather plate runs along rear of the boot Extended inside and outside plate guards the side and toe-box area of the boot Calf plate designed for maximum grip, support and side contact Patented ankle brace with shock absorbing ankle padding Internal plastic reinforcement on the inner side of the boot is covered by thick stamped suede for increased grip and heat resistance Instep flex-zone stitched for maximum support Action leather upper Alpinestars exclusive high-grip rubber double density compound outsole with a contoured tempered steel shank over injected inside the assembly insole Four buckles with memory featuring a quick release/locking system High impact resistant buckles made from injected techno-polymer Top of the boot is sealed with a Velcro strap connected to elastic stretch PVC Poly fabric lining coupled with multi-density EVA Removable anatomic foot bed Extended gaiter helps prevent water entry Standard Tech 3 Boots come with a molded MX sole. Black and Brown versions available with a grippier All-Terrain sole The All-Terrain sole is designed for enduro ATV and off-road riders who require more grip