The S-MX 4 boot provides a combination of high-performance racing technology, combined with everyday street riding functionality and practicality
Newly developed, high-technology micro-fiber gives the boot an exceptionally low weight, while retaining a highly durable and abrasion-resistant outer skin
More streamlined profile and compact shape has improved the riding performance and styling as well improving overall fit and riding comfort
Lasting profile gives an accurate foot fit and greater comfort for all foot shapes
Injected TPU protectors shield the shin, calf, heel and toe from impact and abrasion
Subtle air vents in the shin, calf, heel and forefoot are covered with a specifically designed mesh to provide a high level of breathability and comfort
Flex bellow areas improve forward and rear movement for the Achilles and In-step
Upper panel shapes improve shape retention and natural flex
Quick-drying polyester lining is laminated with open cell foam and high-density contoured padding for shock absorption in the foot area
An extra-wide hook-and-loop flap, in unison with an innovative offset rear opening/closure system works with an elastic mounted zipper to give a precise, comfortable fit
Anatomical and removable footbed is vented to keep the rider’s foot cool and comfortable
Interchangeable, bi-injected TPU toe slider with snap-in assembly
Alpinestars exclusive rubber compound race sole provides a precise feel and improved grip both on and off the bike
Exclusive sole features a structured shank reinforcement for added support and protection of the foot arch
The S-MX 4 Waterproof boot features Alpinestars exclusive waterproof and breathable membrane to ensure 100% wet-weather performance and comfort (available in black)
The S-MX4 boot is CE certified
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