The XT-6 has been the preferred footwear of world class athletes to run ultra-distance races in the harshest of conditions. Lightweight and streamlined, the XT-6 is constructed from a mix of resistant TPU film and mesh that is desgined to last, EVA cushioning to protect your foot, and Quicklace™ lacing. This is a unisex style - sizes are displayed in USA Men's sizing. Please refer to the size guide to find your correct size conversion. Sizing Fits true to size - take your usual sizeTake a size up if in between sizesUnisex style - sizes displayed in USA MEN'SE.g. USA MEN 5 = USA WMN 6 / UK 4.5 / EUR 37 1/3 ORDER SIZE UK EUR US - WOMEN US - MEN 4 3.5 36 5 W 4 M 5 4.5 37 1/3 6 W 5 M 6 5.5 38 2/3 7 W 6 M 7 6.5 40 8 W 7 M 8 7.5 41 1/3 9 W 8 M 9 8.5 42 2/3 10 W 9 M 10 9.5 44 11 W 10 M 11 10.5 45 1/3 12 W 11 M 12 1.5 46 2/3 13 W 12 M 13 12.5 48 14 W 13 M Fabric Details Main Upper - TPU Film / Textile MeshOutsole - Mud Contagrip® RubberLining - Molded OrthoLite® SocklinerLacing - Quicklace™