Sun Mountain’s top-selling insulated collection, the Colter keeps you warm and allows an unrestricted swing. 37.5® insulated panels keep your core comfortable while strategically placed stretch panels provide freedom of movement. The overall result is a multi-use, comfortable, lightweight technical piece that is warm, without being bulky.

Performance clothing powered by 37.5® Technology removes moisture before it turns into sweat, helping you maintain an ideal core temperature so that you can perform your best.
Climate control clothing with 37.5® Technology has been proven to decrease the rate of core temperature buildup, increasing athletic performance by up to 26%.