The ability to effectively layer is an absolute necessity when cycling throughout the winter. As an alternative to our innovative Heavy Base Layer, the Mid Base Layer offers all the benefits of the Polartec® Power Wool™ fabric, only for warmer days. The Mid Long Sleeve Base Layer provides the ideal foundation for your winter layers.This base layer has been constructed using the innovative Polartec® Power Wool™ fabric. With a merino wool interior and a synthetic fibre exterior, we have developed a hybrid base layer with a distinct surface, created to optimise moisture control, breathability, and durability. The premium merino wool makes this piece naturally odour resistant while a high-efficiency grid backer traps warm air and aids in moisture transfer for quick drying.