100% polyester. by opening the zipper, it allows you to place your clothes inside and wash them safely in the machine. do not overload and do not put clothes with metal parts. product size: 15x27 cm. maximum 6 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 6 units. more than 5 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.