read the spec on the Tamrac pro 12 and see it live and up close be two different thing . this bag be HUGE -- fully load it become a major piece of luggage and make a great carry on bag . the Tamrac name be legend among similar product . I have use they bag , all size , for over 20 year now and they get better and better . from the material use to the construction of the bag you equipment be safe ! a padded cell would offer LESS security . Great Tamrac feature include Lens bridge , moveable divider , memory card system & battery slot , it be well organize . room to grow too with six in side slot for extra lens , flash , etc. . long enough you can leave a longer telephoto zoom attach to you camera . if you can actually load this bag up and run out of room you just need another bag ! or simply take out that kitchen sink !