95% regenerated cellulose fiber and 5% spandex bamboo pulp fiber are regenerated cellulose fibers produced by extracting cellulose from bamboo and processing it. They are ideal textile raw materials. When combined with spandex, they are healthy and skin-friendly. Bright in color, resilient and wear-resistant, soft and smooth, sweat-absorbing and moisture-wicking, making wearing comfortable and natural. Southern size: L4XL6XXL6XXXL4 Northern size: XL 5XXL8 XXXL7 Each small box contains 20 boxes, and each piece contains 120 boxes