Honey Bee Hive prints patterns on three foundation cloths (also known as backing materials), they are in order of popularity:
Linen: 100% flax, 13 x 13 count , our recommended backing.  About 80% of our customers purchase this backing.  It can be used for both primitive and fine rug hooking.
Rug Warp: 100% cotton, 13 x 13 count, is a heavier backing. It can be used for both fine and primitive rug hooking. About 15% of our customers purchase this backing.
Monks Cloth: A popular cotton backing that is lightweight and soft.  It can be used for all size cuts and has a 24 x 26 count.  It is not intended for footstool patterns, as it can stretch. Less than 5% of our customers order this backing.
We also offer these backings for sale, by the yard, and as custom sized and serged pieces.
Click here to see our collection of Foundation Cloth and Backing Materials, and purchase either by-the-yard or custom sized and serged pieces.