Southern code: L4XL6XXL6XXXL4 Northern code Each small box of XL 5 XXL8 XXXL7 contains 20 boxes, and each piece has 120 boxes. 95% regenerated cellulose fiber 5% spandex bamboo pulp fiber is made from bamboo as raw material, extracting cellulose from bamboo and processing it to produce regenerated cellulose fiber. It is an ideal textile raw material. Combined with spandex, it is healthy and skin-friendly. Bright in color, resilient and wear-resistant, soft and smooth, sweat-absorbing and moisture-wicking, making wearing comfortable and natural.