ADULT CLOTH DIAPER RESOURCES

First, out of British Columbia, it's
Babykins,
 so-called because they used to sell cloth baby diapers.

Next, out of Oakville and serving across Canada, it's
Healthwick,
 which has reusable and other kinds of products.

Serving the United States, it's
Parent Giving,
 which has reusable and other products, as well as many other items for the aged.

Then, there is the aptly named Adult Cloth Diaper.com.