This value-for-money backpack is made of water-repellent polyester material, which can be folded and has good load-bearing performance. Bright colors and cheaper prices. When you go out, you can fold it into your pocket, and when you need to pack things, you can take it out again. Lightweight and compact, very convenient to carry. It is a good choice for traveling and shopping. Folded: 11" L x 5 1/2" W x 17 5/16" H Unfolded: 6 6/11" L x 6 5/16" W.