External Dimensions: W 16 3/8 x D 6 1/4 X H 12 1/4 Internal Dimensions: W 13 1/4 x D 4 3/8 X H 9 1/4 Two side pockets for additional lenses, gear, etc. Main compartment is accessed by a single straight zipper with double pullers Interior compartment is completely removable from bag, ideal for laptop or weekend clothing use