OsoCozy Unbleached Prefold Cloth Diapers are 100% cotton in a twill/gauze weave. They start out incredibly soft and absorbent, and they become even softer with washing. Wash these cloth diapers a couple times, and they fluff up beautifully! These diapers are sold bulk and are not packaged. Thus, you can sell them in any quantity. OsoCozy Prefolds are 100% Cotton - Unlike prefolds from more recognized national children's clothing brands which use a synthetic polyester filling between just two layers of cotton. Our diapers are a better value as they are thicker, more absorbent and all cotton. Additionally, there is often an ammonia odor buildup in synthetics which you won't get in cotton diapers. Prep diapers before using. Unbleached prefold cloth diapers must be washed and dried on hot at least 2-3 times after you receive them before they become absorbent. Popular with retailers and diaper services around the globe. You will appreciate the quality and value of our prefolds.