The Tenax Long Sleeve Jersey is constructed withActiva Plus, which is a lightweight, breathable micro fiber fabric that is very elastic for superb fit. This material has a high rate of moisture transfer to keep you dry and a titanium treatment to filter out UV rays. Flat stitching throughout in contrasting colors offers a comfortable fit. The full zipper allows simpleone handed operation and a soft silicon gripper at the waist keeps the jacket in place during your ride. The jersey features three rear external pockets with a zippered fourth pocket to secure valuables. Metallic, reflective transfers on the sleeves and back enhance visibility. Recommended for temperatures from 45 to 60F.