it be as if this bag be custom make for the Canon PowerShot a20 . the camera compartment be the perfect size ; not too big or too small . the front compartment hold 4 aa battery -lrb- a loop for each one -rrb- , 2 compactflash card and a box of 4 Duracell Ultra AA alkaline that come from a master pack from Costco -lrb- in case both set of ni-mh 's go belly up ; not likely -rrb- . highly recommend for a camera the size of the a20 .