The perfect mid-weight base layer for warm riders, the Surplus Thermal bottom uses a grid fleece to regulate temperature. Soft squares of brushed polyester maintain warmth while the channels around the grid allow excess heat to escape through the fabric. The result is a regulated body temperature allowing you to feel comfortable in all conditions. The fit is tailored but the stretch fabric ensures movement isn’t inhibited. Re-enforced knees and a black elastic waist band ensure this piece will be your favourite thermal bottom.