Comfortable enough to wear on long multi pitch routes or during extended sessions at the gym, the Evolv Women's Elektra is built for all levels of female climbers. Redesigned for 2014 in two new colorways. Non stretch Synthratek synthetic upper is vegan friendly. Durable and grippy 4.2 mm TRAX rubber. 2.2 mm TRAX duro rand ties the sole to the shoe for sensitivity and power. Asymmetrical toe profile for powerful moves. MX 1 1mm sensitive teardrop half length midsole for edging and support. Nylon lining and overlapping padded tongue for comfort. Slipper shape and performance without the uncomfortable pressure and crunch. These shoes will not stretch order a size that fits snugly, but not too tight EVOLV shoes are scaled so your U.S. street shoe size will usually give a snug fit.