ZUOLUNDUO Mini Backpack Casual Canvas Chest Bag Sling Shoulder Bag Rucksack M8639XK,Black Main material: High density canvas Approx Dimensions: 7.1" L x 3.1" W x 12.2" H There is a function of zipper in the shoulder strape,so that it can turn backpack to shoulder bag according to your habit. The front pocket use magnetic clasp as material so that it can be opened easy. The mobile phone, cards and other items can put in it. Fanny pack with right amount of compartments design, quick and easy access to all your things.