Please click for the La Sportiva Size Conversion. Take your winter running routine to the next level with the waterproof La Sportiva Blizzard GTX winter trail running shoe. Durable AirMesh upper with a four-way stretch dynamic scree guard for added protection against the elements. Single pull high frequency Fusion Gate structure connects to the lacing system for quick and easy closure. GORE-TEX Extended Comfort lining allows for a drier, more breathable foot environment. Comfortable Ortholite footbed for underfoot comfort and support. Injection molded EVA midsole and TPU stabilizer for underfoot support and shock absorption. Gore-Flex strobel board for added waterproof protection. FriXion 2.0 outsole with 7mm lugs and integrated Tungsten Alloy Hobnails for traction in tough winter conditions. 12mm toe and 18mm heel for a 6mm differential. Imported. Measurements: Heel Height: 1 1 2 in Weight: 12.6 oz Shaft: 5 1 2 in Platform Height: 7 10 in Product measurements were taken using size 40.5 (US Mens 8), width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.