Southern code: L4XL6XXL6XXXL4 Northern code Each small box of XL 5 XXL8 XXXL7 contains 20 boxes, and each piece consists of 120 boxes. 95% cotton 5% spandex. This series of products is made of elastic fibers and cotton, featuring a good hand feel, sufficient elasticity, and easy care. It has a large elasticity and can adapt to the bending needs of various parts of the body, and is not prone to wrinkling. The "Baolei" elastic cotton underwear products are breathable and elastic, providing a comfortable fit without tightness, soft and breathable, moisture-wicking and skin-friendly comfort, allowing you to wear healthily.