Muir Premium Linen is double sized and double primed by hand. It weighs roughly 12 oz. after priming, and is suitable for acrylic, oil or alkyd paint. Linen is the strongest natural fiber in the world and also provides a unique surface texture. Archival surface and clean staple free edge. The solid, finger-joint free, kiln-dried bars are milled with lumber harvested from sustainable forests in both Oregon and California.