This 20L Unisex Lightweight Outdoor Backpack comes in 8 distinct colors, with dimensions of 40*28*13cm when unfolded and 12*13cm when folded. It's made from lightweight, waterproof polyester material, making it an ideal option for camping, hiking, and other outdoor activities. The package includes one foldable bag. Please note that the size is subject to an allowable 0.3-1cm due to manual measurement, and the color may differ slightly due to monitor settings.