cotton canvas: 1.Water-proof artist painting canvas 2.100% cotton,100% linen, polyster or mixed 3.Customized size available cotton canvas:*Oil painting canvas: Sretched with frame/canvas roll.*Frame wood species: spruce, paulownia,cedar* Size: stretched canvas:2" x 2", 3" x 3", 4" x 4", 6" x 6", 8" x 8", 10" x 10", 12" x 12", 18" x 18", 6" x 8", 8" x 10", 10" x 12" , 12" x 18" ,ectrolling canvas: ...