www.rickshawbags.com These guys make the Best bags(and not just for you cyclist). I use one for work when I ride in. PLUS they are cheaper then most others and they are made here in the US in the heart of San Fransisco. They're Strong and built to last. i use a Medium Zero Bag. hold my sneakers, socks, shorts, a t-shirt, and any smaller items like cell phone, wallet and so on.