3 in 1 design! The versatility of this bag provides multiple carrying options. When used as a backpack, there is a large zippered main compartment. When used as a sling bag or waist pack the adjustable strap includes a side release buckle closure. Front zippered pocket with an interior zippered mesh pocket, key clip, and RFID card pockets that prevent unauthorized access to personal information. Concealed, back zippered pocket ideal for storing items you want to keep safe.