Maxpedition Jumbo Versipack, in black or khaki. 
 
The world-famous and wildly popular Jumbo Versipack reigns supreme, inspiring 6 different variants. Purposefully designed, the multi-functional Jumbo has a quick release buckle and tuck-in flap for immediate access to multiple pockets & dividers, a spacious rear compartment with Hook-&-Loop interior for CCW, a paracord cinch pouch fitted for 32oz/1L water bottle or radio, and a quick-release ergonomic shoulder & waist strap for fluent mobility.
It's no wonder Maxpedition customers around the globe rely on the Jumbo Versipack as their #1 everyday carry bag.