The water repellent I use on the back of coasters is called Peck Cloth. I have made coasters, ornaments, bags, repair BBQ cover, check book cover and more. I have been pleased when I embroidery on it. Peck Cloth is available on line and in some fabric stores.<br /><br />
Fabric.com states: This 420 Denier woven nylon fabric features a DWR finish (Durable Water Repellent) coating. Pliable and lightweight, this light but sturdy fabric is perfect for utility bags, liners, rain coats, shower curtains, and sporting goods. Hugs and flowers to all, Suzanna
Is there another name it goes by??
I searched "420 Denier woven nylon fabric"
at a reasonable price.