Burton Midweight Long Neck Polyester,Spandex Made in USA or Imported Quick-drying and highly-breathable DRYRIDE Ultrawick mid-weight 200 polyester and spandex fabric construction pulls heat-robbing moisture away from the skin Stretch 360 fabric construction with four-way stretch provides unrestricted mobility Agion Stink-Proof finish fights the effects of odors to keep your base layer fresh for longer; Thumbhole cuffs keep the sleeves locked into place Softlock seams eliminate overlapping fabric for comfort; Mesh front panel for enhanced breathability Extra long body allows you to strap in without your shirt coming untucked; bluesign@ approved for a reduced impact on both people and the environment; One-year warranty