The COMP3 LS SHIRT are made from our unique Compressor3 technical Fabric. It is a 2-sided nylon fabric that comprises of an 'open-knitted' inside to drag moisture from the skin and then transfer to the fine knitted outer, where the molecules cover a wider area on the surface of the garment for increased evaporation. The shirt can be used on its own or as part of layered system and is also an excellent base layer for running in autumn, spring and cold summer days.