Our Lightest And Most Technical First Layer Is A True Multi-Sport Mvp. Airy And Breathable With Offset Merrow Stitching, Its Barely-There Feel Is Enhanced By Body-Mapped Mesh And Natural Sweat-Wicking Properties For Optimal Temperature Regulation. Quick-Drying And Odor Inhibiting To Keep Up With Your Sweatiest Challenges, Its Reflective Detailing Keeps You Visible When The Sun Gives In Before You Do. The Half Zip Variation Of Our Staple High-Performance T-Shirt Is An Easy Choice For Every Outdoor Enthusiast.Features:- 100% Recycled Polyester- Mesh Ventilation Zones On Back And Under Arms- Offset, Smooth Merrow-Stitch Seams- Long Half-Length Zipper Makes It Easier To Put On And Allows Rapid Ventilation In Warm Temperatures- Treated With Heiq Fresh Ffl - A Bio-Based Technology That Reduces Unpleasant Odors- Quick-Drying- Reflective ElementsSustainability:- Recycled- Bluesign® Product- Fair WearSpecifications:- Weight: 106 G- Main Fabric 2 (B2b): Polyester Knit With Fresh Ffl By Heiq- Main Fabric 1 (B2b): Polyester Knit With Fresh Ffl By Heiq- Heiq Fresh Ffl