These are partially waterproof training pants with a hidden layer of PUL fabric under the center panel. Cloth training pants have cotton knit outer and lining of cotton knit fabric. Sewn in soaker consisting of he cotton fleece and bamboo/cotton/polyester. These are not waterproof. This particular style runs large. Therefore a 3T may fit closer to a 4T. I've been making and selling cloth training pants online since 2012 and am listing some excess inventory on Ebay.