I'm soon to be starting a 15 mile commute (each way) to uni and I need a rucksack to carry a few things.
I need to be able to carry a pair of trousers, a top, underwear, pen, paper (plus an a4 sized book), calculator, charger, wallets, keys, phone and lunchbox (big enough for sandwich banana apple and orange).
10 litres is too small, but I'm thinking 22 (like the Osprey Talon) is too big.
I think the Deuter Race X could be a good one at 12litres, or would the Deuter Race EXP (12 litres but expandable to add another 3) be better?
I'm able to leave a towel, toiletries, shoes, lock and a few other things at uni - any opinions on what size bag I might need?