I struggled with space in my seat pack for all of the small things I carry. I finally got a Bento Box on the top bar and that solved my problems. I carry because of Diabetes a Meter, strips and lancet device and some type of granola bar, sugar or candy for low blood sugar. I also carry a spare tube, patch kit, small dual chamber pump in my pocket, tire levers and C02. My cell phone and my diabetes supplies go in the Bento Box, my flat tire stuff goes under the seat and my small blackburn pump goes in my jersey pocket.