Feature 1Premium Material: Sling backpack is made of high density dirt and water repellent fabric, so you can travel with peace of mind on rainy days and dry as soon as you wipe. 2Breathable Mesh: The back of the shoulder chest back pack is made of thickened mesh, three dimensional ventilation, breathable and non stuffy, relieving back pressure. 3High Safety: The back of the sling backpack has a zipper patch pocket, you can put your phone wallet and other valuables; three digital combination lock, encryption security anti theft. 4Left and Right Buckle: In order to take care of long trips have been too much pressure on the shoulder back, chest shoulder bags back design left and right buckle, easy to switch at any time. 5Innovative Design: Shoulder chest back pack built in charging cable, external charging interface, travel can also be charged while playing.Item Type: Sling BackpackOuter Material: Oxford ClothLining Material: PolyesterBag Shape: Vertical Quadrate TypeOpening Method: ZipperNumber of Shoulder Strap Roots: SingleApplicable Scenarios: For Outdoor, Travel, Sports, Cycling.wang-edit-text{ font-family:'Arial' important;}.wang-edit-text .wang-edit-text .wang-edit-text Package List1 x SlingBackpack