REI Co op UPF Lightweight Base Layer Gray Half Zip Athletic Top Shirt, Size M Excellent preloved condition. Retails for $45 Pit to pit 17.5 " inch Length 24" inch Made of a soft polyester blend that wicks sweat and dries fast to keep you warm in winter and cool in summer Spandex in the blend gives the fabric 4-way stretch, while underarm gussets ensure you can reach and move with ease High neck coverage with a half-zip front Flatseam construction is comfortable against your skin UPF 50+ sun protection Fitted Made in a Fair Trade Certified™ factory REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits spring summer beach tropics island boat yacht western luxury luxe shopping gardening everyday wear lounge travel school driving sexy trendy brands fashion festival concert pool success elite comfort cool surf surfing Office business casual meeting errands all seasons cocktail party brunch church city jobs flying tea dinner date lounge library formal classic wedding resort wear boho chic college vacation