It has a removable pocket where the ballast is loaded which we take out easily and quickly using the handle (visible in gray in the photo). A main pocket large enough to hold a mask or buoy and a small pocket on the access flap and zip closure.
The D-Ring ring has a rubber that makes it positioned transverse so that its location is much easier. The rubber also makes the position not rigid. This ring is also removable if you want to do without it.
Dimensions: 19.8 x 15.5 x 9cm