ALPINESTARS SMX+ Vented Boots - Black/Red - US 12.5 / EU 48 2221119-13-48 Bill's Exhausts The AirDog system uses advanced

The AirDog system uses advanced fuel air separation technology to remove entrained air

3D mesh lining incorporates anti-sliding suede on heel area to keep the foot located inside the boot

Refined split-cushion design maximizes long-range comfort by separating the seating surface from the lumbar to reduce tailbone and back pressure

heel for additional impact and abrasion resistance

ALPINESTARS SMX+ Vented Boots - Black/Red - US 12.5 / EU 48 2221119-13-48 Bill's Exhausts The AirDog system uses advancedThe SMX Plus v2 Boot perfectly blends sleek sports styling with advanced protection features developed in Alpinestars performance footwear department. The durable and light microfiber upper is reinforced with a rugged polymer protector and the exclusive Multi Link Control (MLC) system prevents ankle torsion while offering freedom of movement. Advanced microfiber upper construction for lightweight high performance protection and superb levels of