Arc'teryx Mens Ether Zip Neck L/S 1" high 11" wide Durable Helius fabric wicks body moistureand is comfortable next-to-skin Mid height collar and 1/4 zip neck with semiauto-locking zipper slider aids in temperatureregulation Mesh underarm and side panels aid ventingand have anti-odour finish Gusseted underarms provide no-lift comfort Flatlock seam construction reduces chafing