Alpinestars SP-X BOA Boots — EU 40, Mid-Calf, Black

Compact sport boots engineered for riders who want protection without the bulk of a race boot.

• Designed to fit under technical riding pants and provide superior walking capability.
• Optimized for sport and sport-touring use with high levels of protection on and off the bike.
• The upper combines Rideknit® fabric and knitted mesh with seamless thermo-welded panels for breathability and flexibility.
• The sole integrates a Transversal Protection Frame (TPF) and an asymmetric heel to promote a natural stride and off-bike stability.
• Integrated shin impact protector, dual-density ankle discs, and reinforced shift pad and toe slider enhance impact and abrasion resistance.
• Comfort features include flexing knit panels at front and rear flex points, a cushioned midsole with double heel compound, and a removable OrthoLite® insock.
• Medial zip combined with the BOA speed lace system allows compact, precise entry and closure.

Lightweight, protective and versatile—ideal for sport riders seeking coverage without an over-the-pant look.