Designed for the traveling diver this pack has a dedicated sleeve for a laptop, a fleece-lined compartment for a phone or MP3 player with a passage for a headphone connection, padded shoulder straps with moisture wicking mesh, a meshpocket for a water bottle and two frontal pockets large enough for a mask box in each. No need to place mask in checked baggage. Dimensions are 19" x 15"x 8"