Arc'teryx Mens Ether Zip Neck L/S Mesh^Polyester Made in USA or Imported 1" high 12" wide Fast drying with a moisture wicking finish to promote evaporation UPF 30+ rating for sun protection Breathable and durable with light mechanical stretch Durable helius fabric wicks body moisture and is comfortable next-to-skin Mid height collar and zip neck with semi auto-locking zipper slider aids in temperature regulation