1. Shoulder backpack, easy to carry, comfortable fashion, adjustable length2. Intimate design, independent slipper layer separation, more sanitary and convenient3. Dry and wet separation package, both wet and dry use; Shrinkable pocket mouth, can be large or small, as desired4. Go out everyday, go shopping and memorize simple collocation, easy to get literary sense5. Waterproof fabric to prevent water intrusion, can prevent moisture inside the bag, portable6. Strong sealing, tight stitching, do not have to worry about the opening hole, zipper workmanship precision7. Independent layer intimate design, independent slipper layer, more sanitary and convenient