The SP-X Boa boots are a sleek sport boot designed to fit under tech riding pants & provide superior walking capability. Optimized for the sport & sport touring rider, the SP-X Boa boots are compact, mid-height boots with premium levels of protection & comfort on & off the bike. The upper is constructed from a combination of advanced microfiber, ultra-soft Rideknit® material & knitted mesh, plus seamless thermo-welded parts. The lower features a TPU heel counter, toe slider, & the Alpinestars TPF Transversal Protection Frame on the sole, allowing for high levels of protection against impacts & any bending or twisting. in addition, the sole also features an all-new design with an asymmetric back heel to facilitate the rider’s natural stride & promote off-bike stability. For protection, the SP-X Boa boots have an integrated shin impact protector, dual-density ankle discs, plus TPU shift pad & toe slider reinforcement. & for comfort, the knitted areas on the front & back flex points offer great freedom of movement, while the PU midsole with integrated double cushioned heel compound & removable Ortho Lite® insock, provide great walking comfort. In & out is facilitated by a medial zip combined with the Boa speed lace system for compact & precise closure. The SP-X Boa boots are perfect for those sport riders looking for coverage & protection but without the full race boot, & an over the pant look. Features TPU heel counter, shift pad, toe slider, & Rotor protection Dedicated side Boa speed closure system engineered for optimal closure & personalized fit Front bellow made in Lycra co-injected with soft TPU for enhanced comfort & durability Dual heel cushion pads Integrated PU heel midsole TPU protective parts Removable anatomic EVA footbed with Lycra lining Engineered profile for comfort Walking roll & asymmetric heel shape for walking stability Footrest heel shape & engineered grip Integrated shin guard Advanced microfiber & ultra-soft Rideknit® calf Exclusive new Alpinestars’ rubber sole Internal dual density malleolus impact protection According to European statutory law the mark is a conformity requirement for the marketing of this product. The following standards apply: EN13634:2017