The think tank streetwalker harddrive is a bag that places the emphasis on comfort thanks to its customisable harness system which can be personalised to fit your body its no prolem to carry the harddrive for long periods even when its fully loaded with a dslr and battery grip two long lenses and a 17 inch laptop with lots of extra pockets for additional items this is the ideal bag for the day tripping photographer who wants to keep all their gear in one place