Spring can be a time where one moment it's warm, the next a sharp shower blows through. When you're training in such conditions you'll want a base layer that keeps skin dry and hence body temperature stable. Made from Dryarn Micro-fiber, the S1 Spring Base Layer is light in weight and yet offer excellent temperature regulation and sweat management. The polypropylene structure provides a high degree of breathability, improving comfort through prevention of excess sweat from causing you to chill. A great base layer to maximise the performance of your favourite spring jersey or jacket.