Features 1. Material: Synthetic leather, black, anti-theft hidden underarm leather case, wallet, phone bag, single shoulder leather case. Soft cowhide, compact and lightweight, comfortable to wear. 2. Adjustable: Adjustable telescopic buckle, suitable for people of different heights, suitable for both men and women. The adjustable shoulder strap allows you to easily adjust to the desired length, making it easy to wear. 3. Reliable buckle: The sturdy design makes the wallet less likely to loosen and prevent it from falling off. Suitable for work, going home, running, traveling, and business trips. 4. Anti theft: The innovatively designed anti-theft shoulder wallet can hide valuable items under the jacket to prevent pickpockets from stealing. Two pockets can store your items such as iPhone, mobile phone, keys, pen, passport, MP3 player, etc. 5. Compact and practical: You can put it on top of a T-shirt, or wear it inside or outside a jacket or business suit, making it easy to carry outdoors. This backpack provides you with dual protection, hands-free, and zero pressure, making it easy to travel with. Specifications Adjustable size Material: synthetic leather Color: Black/Brown Target audience: Men Package Include: 1 x Underarm Wallet