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The SP-X BOA is Alpinestars' mid-height sport and sport-touring boot, built to sit under riding pants and to be walkable off the bike. The upper mixes Rideknit knit material with thermo-welded panels, and protection comes from a TPU heel counter, toe slider, shin impact protector, dual-density ankle discs and the Transversal Protection Frame in the sole. Closure is a medial zip plus the BOA speed lace system for quick, precise fit. It suits riders who want real ankle and shin coverage without the stiffness of a full race boot; the trade-off against a race boot is less rigid bracing, and against a casual riding shoe it is more protective but less casual-looking.
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The SP-X BOA is a compact, mid-height sport boot for sport and sport touring riders. It is designed to fit under tech riding pants and to walk well off the bike. It gives coverage and protection without the full race boot look.
The upper combines Rideknit® material, knitted mesh and seamless thermo-welded parts. The lower has a TPU heel counter, a toe slider and the Alpinestars Transversal Protection Frame (TPF) on the sole, which protects against impacts, bending and twisting. The sole has an asymmetric back heel to support the rider's natural stride and stability off the bike.
Protection includes an integrated shin impact protector, dual-density ankle discs, a TPU shift pad and toe slider reinforcement. Knitted areas at the front and back flex points allow freedom of movement. A medial zip and the BOA speed lace system make the boot easy to put on and take off, and close it compactly and precisely.
