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 drySun Protection Fabric™ gives you UV coverageOdor resistant, Watch Window provides easy access to wearable techErgonomic thumbholes, Contains materials that meet the bluesign® sustainability standards Men's Rebar Polartec Elite ¼ Zip Baselayer T-Shirt in Black, Size: Large_Tall by Ariat