REI Co-op Men’s Heavyweight Merino Base Layer Half-Zip Top $49.83

REI Co-op

REI Co-op Men’s Heavyweight Merino Base Layer Half-Zip Top $49.83 at REI.

  • Made with 100% merino wool that naturally wicks away sweat, resists odors and dries quickly
  • UPF 50+ sun protection
  • Collar with half-zip neck lets you ventilate as needed
  • Thumbhole cuffs hold sleeves in place and help seal warmth in
  • Underarm gussets are made for ease of movement
  • Shoulder seams are rolled forward to help prevent chafing under pack straps
  • Close-to-body fit for optimum performance