i bet i know your problem, i bought a set of breathable waders last year and had the same problem. they leaked, so i returned them, the 2nd pair leaked. i switched brands and they leaked too. i finally discovered what i was doing wrong. i never really worried about drying out my neoprene waders, afterall they were keeping me dry, but breathable waders must be completely air dried after every use or they will eventually leak. make sure you turn them inside out and dry the inside as well. and be certain, for sure, that you fight the temptation to use a sealer like camp dry, or scotch guard on them. that will make them unable to breath and you will sweat like a sauna!!!