ALPINESTARS SMX-6 v2 Vented Boots - Black/Yellow - US 4 / EU 37 2223017-1550-37 Back Mix T-Shirt Bionic Hydration Pack compatible

Bionic Hydration Pack compatible

Drystar® membrane layer between upper and lining for unsurpassed all weather performance

Open meg:  Direct straight back open meg

and race grade bovine leather construction for the optimum blend of weight saving

Logos at chest and sleeve

ALPINESTARS SMX-6 v2 Vented Boots - Black/Yellow - US 4 / EU 37 2223017-1550-37 Back Mix T-Shirt Bionic Hydration Pack compatibleBoot upper incorporates an innovative front and rear bellows and rear calf zone for superior levels of flexibility Boot upper is constructed from microfiber for durability and abrasion resistance Ergonomic forefoot streamlining enables greater control of the bike's controls and provides a superior, wide ranging foot profile for excellent fit and comfort Thermoplastic Polyurethane (TPU) lateral ankle brace provides a biomechanical support between the