US sizing. Icebug has joined forces with Michelin to make spikeless winter shoes. These sporty winter shoes are the perfect choice for both gentle strolls and active Nordic walking. Remember that spikeless winter soles have limited amounts of traction. - Waterproof and breathable, thanks to genuine Gore-Tex - Relatively wide last enables you to wear thicker socks - Light on your feet, thanks to the light weight ripstop fabric - Detachable Ortholite insoles provide an extra touch of shock absorption - Fleece liner 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.