I can only agree with what [Anonymous] said. It has no extra compartment at the bottom. I think the backpack comes in 3 different colours: "small", "large" and "large with the compartment at the bottom". This would be the "large" version
By the way, a very nice backpack, I can only recommend it!

Hello. There is no pocket placed on the bottom. It has a small zipped compartment on the side of the back for a wallet or keys and such. Inside it has a divider and two containers for bits and pieces. Regards