Material： Soft Durable PU leather and Nylon Fabric, with Waterproof and Anti-theft function to protect your electronics, books or clothes. Multifunction：The strap of backpack is adjustable. And you can carry it as a single-shoulder bag or backpack as there is a removable short shoulder strap. Suitable Occasion: Casual Outdoor, Dating, Shopping, Short Travel, As a Gift, Back to School and etc. Features: Classic Fashion Style, Multi-Pockets, Easily carry your mobile phone, laptop, wallet, cosmetic, water bottle, umbrella, and other daily items.