More than just a base layer, it´s a four-season shirt with breathability for staying on the move.Winter layer, of course.Spring breathability, for sure.Quick-drying for summer fun, oh yeah.The women´s Burton Lightweight X Base Layer Crewneck brings comfy stretch to your layering program.It´s your go-to base layer for the mountain.It´s a stand-alone shirt for a run.Think soft against the skin and fresh feeling between washes.Features:Slim fit sits close to the body, with room for the garment to move with you.Lightweight 100 Living Lining® provides consistent temperature regulation without adding bulk or weight.Four-way stretch fabrication for enhanced mobility.Quick drying and highly breathable.bluesign® approved non-biocidal finishes keep odors at bay.Chafe-free softlock seams for added comfort.bluesign® approved materials use only safe chemicals and reduce impact on both humans and the planet during manufacturing.