The specifications given by Manfrotto VII on this version are:
internal height (H) 27 cm
internal length (L) 31 cm
Internal depth (l) 16.5 cm
External height (H) 46 cm
external width (W) 35 cm
External depth (l) 24 cm
Weight (empty) 1.25 kg
As one can guess, the internal dimensions only show the photo of the bag, leaving the rest to store a jacket or other business.
The number of additional goals, I could store a 14-24 / 28-70 and a 2.8 / 2.8 mounted in addition to the D800 with a 80-200 / 2.8.
The bag is thick enough to store the D800 in the thickness of the bag and have another directly accessible zoom. Access to the third zoom request to withdraw the second.
So beware, if you have a hardware corresponding to the title, you may find it too large bag. It really makes for a big box mounted with a big zoom (70-200 / 2.8) and other large stones.
Beware also if you heavily load this bag ... consider that it will be worn on only one shoulder.
The bag is perfect for the touring where you are going to wear this bag for an hour at most before returning your vehicle. And if your bag is loaded, wear your tripod on the other shoulder rather than hang on the bag.
Unless you have some lumberjack shoulders, I advise you not to go hiking with this heavily loaded bag. Instead, choose a comfortable bag with two straps.
Just as well that made Lowepro bags in this price range.