WC Force Custom Spandex Tank82% polyester, 18% spandex Four way stretch fabric UPF 50+ Made with a smooth and comfortable microfiber yarn Top sits just below the hips Dipped hem Size Chart This size guide shows product measurements taken when products are laid flat. Actual product measurements may vary by up to 1" because theyre custom made by hand. A 1 2 chest width B 1 2 waist width C length Size Label A B C XS 14 13 23 S 15 13 24 M 16 14 24 L 17 16 25 XL 19 17 26