ALPINESTARS SMX S boots

With a durable microfiber upper for comfort and fit, as well as numerous advanced built-in internal and external protective features, the SMX-S boot features an ergonomic forefoot design, a breathable lining, and Alpinestars' unique rubber compound sole for optimized levels of support and performance.

The durable microfiber upper construction offers the best possible flexibility and comfort.

The new ergonomic last provides a more aerodynamic forefoot for significantly greater precision on the controls, as well as outstanding overall foot profiling, fit, and comfort.

The new ergonomically optimized TPU shin protector is race-proven to provide outstanding impact and abrasion resistance.

The TPR-injected lateral ankle support provides optimized levels of protection and stability.

Double-density TPU ankle protectors are covered by the upper material on both the lateral and medial sides for excellent all-round protection.

The breathable textile inner lining features a suede anti-slip reinforcement in the heel area.

Built-in, replaceable sliders made of bi-injected TPU feature a new simple screwless mounting system for faster and easier replacement.

The TPU shift pad incorporates a technical texture for protection and grip.

The medial opening/closing system features a zipper attached to an elasticated section with a wide Velcro strap for flexibility and a consistently secure fit. The entry opening is wide, making the boot easier to put on and take off.

An internal toe cap protector is layered beneath the upper material for durability, improved feel, and performance.

The new removable anatomical dual-compound footbed incorporates EVA and elastane for performance, comfort, and support.

The sole made from Alpinestars' new unique rubber compound promotes improved feel and grip, water drainage, and durability.