ALPINESTARS SMX+ Boots - Black/White/Red Fluorescent - US 12 / EU 47 2221019-1231-47 Adventure 390 2020 High temperature resistant packing

High temperature resistant packing

Accordion panel on back and shoulder with HRSF polyamide stretch material on sleeve for an optimized fit and performance

Fully removable interior comfort liner helps maintain a neutral pH level close to the skin

muffler body

Set industry benchmark for revolutionary design and technical features

ALPINESTARS SMX+ Boots - Black/White/Red Fluorescent - US 12 / EU 47 2221019-1231-47 Adventure 390 2020 High temperature resistant packingAdvanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Front flex area is constructed with a soft microfiber for improving abrasion resistance and natural forwards and backwards movement Flexible accordion microfiber on Achilles gives enhanced natural movement Outside entry exit has stretchable accordion panel for a close fit and ease of entry and removal. Contoured high modulus shin plate