Think Tank Retrospective 15 Backpack - Classic Bag For Adventurous Filmmakers. Also, for extra resistance and longevity, all the zippers are YKK(r) RC Fuse (abrasion-resistant). If you are traveling by plane, do not worry, this lightweight bag (4.
0lbs/1. 8kg) will fit perfectly as a carry-on item with dimensions of 30 x 40. 5 x 18 cm. AdOn the sides of the bag, some straps are compatible with Think Tank Modular pouches. The back of the Think Tank Retrospective 15 backpack is padded for additional comfort. Finally, there are two ways to access the interior of the backpack: by opening the top panel, or via the rear-panel..