Scientific and reasonable layering, tolerating your various sundries, and comfortable traveling. Single-side storage mesh pocket for water cups, folding umbrellas, etc., easy to access. Waterproof fabric, comfortable and delicate feel. Breathable fabric for backpack straps, no stuffy feeling when exercising, always keep comfortable. Foldable backpack design, easy to store without taking up space. Designed with a variety of colors, both men and women can carry it, adding color to outdoor travel. Take it with you when you go out, and make your life lighter, it can be put into backpacks, handbags, or suitcases to meet the needs of hiking, leisure shopping, and so on.