Inov-8 Women's Tri-X-Treme 275 Running Shoe 100% synthetic Imported Rubber sole This shoe rewards triathletes with a lightening fast transition and run time A quick release toggle systme means no time wasted on laces, while a large shoe opening guarantees the foot will enter at speed The latest in inov-8 Dynamic Fascia Band technology and the Terradapter heel unit allows triathletes to run with maximum efficiency from the first step Boasts full length drainage system so foot stays dry Female specific fit