FLYMEI Sling Chest Bag with USB Charging Port Waterproof Anti-Thief Single Shoulder Crossbody Bag, Portable Lightweight Tactical Shoulder Bag Multi-Purpose Concealed Pack for Camping, Hiking, Outdoor =&gt; Technical Parameters: (Pls note: Power bank is not included) This sling bag size: 12.2X 7.1 X 3.2inch, weight: 0.77 pounds. Totally 5 pockets: 1 front zipper pocket+1 main compartment+2 inner open pockets+1 inner zipper pocket. Made of Oxford material, the lining is polyester, scratch-resistant, anti-tear, water-resistant. =&gt; Anti-theft Chest Bag: The zipper for the main compartment can be hidden away with a cover so that the zipper cannot be seen. This would effectively prevent some pickpockets from happening without affective the overall look of the bag. =&gt; USB Charging Port: Built in USB charger allows you put your Power Bank into backpack and connect internal USB cable, then let your charging cable insert USB port to connect your electronic device, easily keep your smartphone full power anytime and anywhere. =&gt; Three Ways To Use It: carrying behind your back or in front of chest, slinging on one of your shoulder is also available. It can act as a single-shoulder bag/sling bag, or a cross-body bag for use. =&gt; Comfy & Sturdy: Padded ventilating back with ergonomic design for comfort. Fully adjustable padded single shoulder strap allows this bag to fit most people. Easily Changeable Strap Direction according to your preference.