Features:Versatile Baselayer:- This performance half-zip is the perfect first layer in winter, or a stand-alone in spring or fall. Unzip the collar for cooling.Warm And Dry:- Our thermal-reflective lining holds heat in, while the wicking fabric keeps you from getting a chill.Performance Fit:- The ergonomic, body-contouring seaming is made to move, and thumbholes keep the sleeves in place.- Omni-Heat™ thermal reflective- Omni-Wick™- 4-way comfort stretch- Antimicrobial treatment protects this product from bacterial growth- Ergonomic seaming- Flatlocked construction- Thumb holesSpecifications:Fabric:- Omni-Heat™ Reflective Anytime Stretch Jersey 85% polyester, 15% elastane