Shoes tend to run small; it is recommended to select a half size larger. Ensure accurate fitting by measuring the foot using the size guide provided. Upper - woven with bio-based Dyneema® for the highest performance, abrasion resistance and the lightest footprint. Laces - diamond design pattern with bio-based Dyneema® and recycled polyester. Hi-Vis Reflective - front to rear for 360° visibility. norda™ Lock System - Ultra light and comfortable sock, gusset construction for the ultimate fit. The foot is held in place to provide stability as you run through ever changing conditions. Insole - custom designed eTPU for the highest possible energy absorption and return. Midsole Cushioning - norda™ x Vibram® SLE. Soleplate - norda™ x Vibram® exclusive design Formation sole with Litebase® and Megagrip®. Rubber 5mm lugs.