I've been using this bag for my two week old daughter's cloth diapers. So far we have only used it at home so I haven't gotten to test it out when we're out and about. At home it works perfectly. We hang it by her diaper station and put all the dirty diapers in it until it's full. It fills up within a few hours, so I haven't had a chance to test how long it would last without starting to smell. For the few hours that we're filling it up it doesn't smell or leak at all. We bought a second bag so that we always have one ready to go.