US sizing. Lightweight, studded running shoes with great cushioning. Reliable Icebug Bugrip traction enables relaxed running even when it's slippery. The NewRun is designed especially for icy walkways and bike paths. Short and wide model - choose one half-size larger than you normally wear. - 17 carbon steel spikes on both sole - Gore-Tex Extended Comfort membrane: fully waterproof - Strong polyester fabric - Boa lacing: accurate, fast and reliable - OrthoLite Hybrid insoles - EVA midsole is slightly wider at the bottom, adding to the stability - Surface and liner fabrics as well as the insoles are Bluesign certified - Oeko-Tex 100 certified liner - TPU mud guard Note! As opposed to product images, some Icebug shoes have small, colourful dots in the sole material, due to the recycled material used in them.