Spyder Halcyon Zip T-Neck - Men's: The Halcyon Zip T-Neck is an innovative midlayer that offers warmth without the bulk to keep your body moving and your temperature regulated during cold weather adventures. A 360Adeg stretch double knit pique is built with a touch of loft, offering a range of warmth and breathability. The addition of merino's natural moisture management and odor resistant properties under arms and at sides blends modern technology with mother nature's best. A zippered pocket at back right is the perfect spot to stow meal bars or credit cards. Integrated Merino ventilation zones for moisture and temperature management Reverse coil center front zipper Interior storm flap Zipper storage pocket at wearer's back right Custom interior locker loop 360Adeg Stretch Double Knit Polyester Pique 360Adeg Stretch Merino Polyester Double Knit