The Alpinestars SMX-6 V2 Drystar motorcycle boots are made from highly lightweight but ultra-durable Microfibre with innovative front and rear bellow zones incorporated in to the structure for flexibility. The Alpinestars Drystar membrane is fully waterproof and breathable for comfort in all conditions. The SMX-6 V2 has lots of added protection with a TPU lateral ankle brace support between the calf, shin and ankle for impact protection along with a TPU injected shin guard, calf protector, heel counter, gear change pad, ankle brace and toe sliders as well as a double density ankle protector on the medial side and an internal insole with shank reinforcement and an internal tow box protector. Air vents on the heel counter and shin plate give enhanced air circulation for a comfier ride along with flex zones on the instep and Achilles which give ease of movement for riding and walking. The breathable textile interior lining with suede anti-slide keeps your feet in position and the anatomic footbed with EVA and Lycra is removable. The sole is an Alpinestars compound rubber sole with improved grip, water dispersion and durability and this has replaceable toe sliders with easy screw fittings. This has medial side entry opening with elastic mounted zip and wide hook and loop closure for a more personalised fit.