Please click for the La Sportiva Size Conversion. ; The La Sportiva Core High GTX offers reliable waterproof protection, excellent underfoot comfort, and reliable traction that lets you dominate every mountain trail! ; Mid-cut, waterproof shoe ready for any terrain that offers all-day, long-distance protection. ; Airmesh, synthetic leather upper with Innovative Nano-Cell Technology. ; Innovative Nano-Cell Technology upper wraps the foot in protection while allowing maximum breathability and waterproof protection. ; Flexible TPU lacing harness is secure and stable on variable terrain. Features HF reinforcements on the lacing harness to provide a great fit. ; Waterproof lining featuring Gore-Tex Surround Technology keeps out the wet elements while providing 360 degree breathability. ; TPU toe cap protects feet from rocks and abrasions. ; STB Technology stabilizes the foot by wrapping the midsole and unifying the midsole with the upper for the perfect locked-down fit. ; Compression-molded EVA cushioning technology and TPU insert provides excellent supportive comfort. ; Vibram Nano outsole with Impact Brake System proprietary technology in outsole design has the lugs of the soles oriented in opposing slanted directions, increasing braking power by an average of 20% and decreasing impact forces by an average of 20%. ; Built on a Tempo last. ; Imported. Measurements: ; Weight: 1 lb 2 oz ; Shaft: 6 in ; Product measurements were taken using size 45.5 (US Men's 12), width D - Medium. Please note that measurements may vary by size.