1. Small Backpack Design The messenger bag has padded shoulder straps to ensure your comfort, and the adjustable shoulder straps have breathable mesh for breathable comfort. Shoulder strap design with reflective strips for more safety at night, drawstring pockets on both sides for everyday use2. Multifunctional Adjustable Crossbody Bag The crossbody bag can be swapped on the left and right shoulders, just connect with the left or right D-ring. You can freely adjust the shoulder straps to your liking. Can be used as a chest bag, messenger bag, shoulder bag, travel bag, small backpack, small backpack travel bag, work or business bag3. Large Capacity: The messenger bag has reasonable space, 1 small inner zipper pocket inside the bag, one hidden button pocket and one zipper pocket on the surface, and two drawstring side pockets. The messenger bag has enough space for all your essentials like books, mini ipad, mouse, keys, phone, umbrella, etc. It can be used as a day pack4. Multi-purpose adjustable messenger bag The foldable messenger bag is changed from the left shoulder to the right shoulder, just connect the left or right D-ring. You can freely adjust the shoulder straps to your liking. Can be used as a chest bag, messenger bag, shoulder bag, travel bag, small backpack, small backpack travel bag, work or business bag5. Sling Backpack Usage: Neutral sling bag is perfect for daily use, simple and lightweight backpack messenger bag, waterproof and durable, suitable for hiking, cycling