Wool

Wool Soaker

Natural fiber from sheep hair. Frequently used as the waterproof layer in a diaper cover if the family wants to use only natural fibers and avoid plastic. It is a very breathable fiber, and is great for preventing rashes and yeast infections. Wool can go without washing for up to several weeks, unlike most covers.

Lanolize

Lanolize

Process in which you add lanolin (natural sheep oils) to wool to make it almost waterproof. Most commonly done before you first use the covers, and as needed after handwashing the covers.