100% Polyester Zipper closure ??Size Tips?? Asian size may be 1-2 size smaller than US or EU; Usually buying one size up will be OK, please view the size chart image before ordering. ??Reflective?? Reflective strip at the back to ensure night riding safety. ??Breathable and Quick Dry?? Material: 100% Polyester; even soaking wet, the jersey will not stick in the body. ??Hem with Silicone Band?? Silicone band can provent skin allergy and the cloth upglide during riding very well. ??Full Zipper?? Use of full length invisible zipper, sewing fine; Imported ink printing technology,so never worry about color fading.