I have used this since it came with my 2014 Epic and now have had 2 more Epic's since and I have bought a new one for each bike. I can fit a gear cable, mech hanger, 29er Turbo tube (must be turbo tube as smaller) Flat boy patches (put these in a small resealable bag or they get wet and useless) 25g Co2, SWAT Mini Co2 head, EMT Tyre lever and a dynaplug racer. It's snug, and you have to pack properly, but I don't ever intend on needing to open it!