this rucksack offers a secure entry via the "top opening tube" approach with a secure lid that clips right over it. This is better than the "zip off front rucksacks" where everything falls out. The side pockets are nice and deep, mine takes my birding book on one side and the other my scope (although it sticks out of the top.) The lid pocket is great for the car keys, glasses and polos etc. The straps are well padded and contoured to fit the shoulders. The pole strap fixing takes my monopod. Inside are the camera and binoculars sitting on the rain cover for padding. For the price....faultless.