The original two-piece structured snowmobiling boot. With a durable insulated foam inner liner and highly reinforced exterior frame the ultra-stable Radium GTX Boot provides maximum support for big jump landings and high-impact stresses. with full GORE-TEX® GUARANTEED TO KEEP YOU DRY® waterproof and breathable footwear technology built in feet remain comfortably dry even in the heat of race-day battle. Radium boot users demand ultimate support substantial warmth and the convenience of a two-part boot for drying between rides.