Designed to be worn close to the body, this premium base layer is meticulously engineered with patented grid construction knit fabric to increase warmth and breathability without adding weight. It features a sustainably conscious design that delivers a sleek technical style ready for work or outdoor adventure. Rebar Polartec Elite ¼ Zip Baselayer Product Features : Moisture Movement Technology™ helps keep you dryOdor resistantSun Protection Fabric™ gives you UV coverageWatch Window provides easy access to wearable tech, Ergonomic thumbholes, Contains materials that meet the bluesign® sustainability standards Women's Rebar Polartec Elite ¼ Zip Baselayer T-Shirt in Charcoal Heather, Size: XS by Ariat