The EC Store has a bunch of different types of training pants. http://www.theecstore.com/. I bought a pair of the Bedtimes Training Pants for my ds. They have a waterproof PUL outer layer and smooth hemp jersey layers inside. They even have elastic bands inside to tuck more layers if you need them. DS wets a lot at night but we have never had a leak. They seem to run fairly small, though. I bought a large (30-40lbs.) for my 33lb. ds but they hardly fit him.