This is a specialist shoe for running in snow and ice. Underfoot, a grippy Vibram ice track sole provides traction, and the midsole provides a moderate level of cushioning with a neutral 6mm drop. The upper has been designed for winter use, with a comfortable quick-laced inner shoe and an integral water-resistant Outdry gaiter. The two-layered upper creates a warm and protective shoe. It’s expensive but essential for racing or training in extreme cold. The Neutron has a roomy fit, allowing you to wear thick socks without compressing your feet. It’s at the heavy end of the test, but feels good on the feet and nice to run in.
VERDICT: An awesome pair of shoes if warm, dry feet are a priority.