G4Free Tactical EDC Sling Bag Pack with Holster Military Shoulder Range Backpack for Concealed Carry with 6 PCS Free Gifts Accessories -- 1 USA Flag Patches, 1 D-Ring Spring Lock Buckle, 2 D-Ring Tactical Carabiners, 2 Tactical 360 Rotation D-ring Clips. Military backpack is made of 900D high density oxford fabric--durable and water-resistant. Adjustable shoulder sling strap and removable waist strap. Adjustable quick release buckle strap bottom and front load compression system-Y strap .