Material: 100% polyester Body size (cm) (approx.): Width 42 x Length 35 x Height 24-42 Compatible with electric assist bicycles and large baskets. Designed to fit various basket shapes such as square, round (D) type, and wide baskets. The cover back uses elastic rubber, so it fits baskets of various sizes. Of course, it has a 2-stage storage design, so it's neat when there's no luggage! Stores plenty when there's a lot! * Specifications are being changed from single-opening to double-opening.