Please click for the La Sportiva Size Conversion. ; An evolution of the ultimate lightweight, low profile, and all-synthetic mountain boot, the Batura 2.0 GTX is ready to take the mountain to task. Are you? ; Awarded the Editor's Choice by Outdoor Gear Lab, announced on April 8th, 2013. ; Ideal for high elevation alpinism, winter mountaineering, and ice climbing. ; Superlightweight upper materials make these the lightwest, warmest, and most agile boot on the market. ; High tenacity nylon upper with insulated anti-dragging felt, insulated PE, and an insulating aluminum layer. ; An integrated external gaiter uses stretch GORE-TEX technology to keep you dry while the inner boot uses another GORE-TEX layer, allowing moisture transport to the outer layer creating the ideal climate for your feet in cold conditions. ; Asymmetrical waterproof zipper is durable, resistant to abrasion, and creates a better fit. ; Six-layer synthetic inner boot keeps feet feeling toasty and warm. ; Lining of a polyamid thermic layer and mesh. ; A stiff honeycomb carbon insole supports the foot and creates an air chamber for better insulation and rigid performance when front pointing or edging on rock. ; PU heel cushion and forefoot cushion provide excellent comfort. ; Completely rigid tapered 8-9mm TPU midsole for automatic crampon compatibility. ; Vibram outsole with Impact Brake System. Measurements: ; Weight: 2 lbs 5 oz ; Circumference: 14 in ; Shaft: 11 in ; Product measurements were taken using size 45.5 (US Men's 12), width D - Medium. measurements may vary by size.