1. Material: polyester spandex 2. Function: breathable, wear-resistant 3. Applicable gender: suitable for both men and women 4. The invisible zipper is opened on the side, regardless of the left and right handles 5. Thickened fabric, highly elastic and wear-resistant 6. Smooth zipper, tight bite, smooth pulling 7. Digital printing, bright colors, not easy to fade 8. Size: S is 18-21 inches, M is 22-25 inches, L is 26-28 inches, XL is 29-32 inches 9. Weight: S 200g, M 250g, L 300g, XL 360g