Description Blick Polyester Cloth Canvas is an unprimed canvas with an ultrasmooth singleweave texture and a raw weight of 12oz It provides an extra fine painting surface suitable for detailed work along with greater longevity and dimensional stability than natural fiber substrates Polyester is a synthetic fabric that doesnt rot and is less susceptible to the acid effects of oil paints There are no expansion or contraction problems even when humidity levels vary from 35 to 95 The tension stays consistent and does not change after stretching

