6 oz fiberglass cloth, style 1522 with standard, open weave. Generally the product used to cover wooden canoe and kayak hulls. Sized (treated) for epoxy and polyester resins. Fiberglass is measured as weight per sq. yd of material and sold by running yd. Comes in 60 inch or 38 inch wide. 60" is required tocover most canoes while 38 inch is for narrower kayaks. Or you can use 60" wide on a kayak and place on an angle and save. All fiberglass orders are shipped rolled on a tube, hence shipping costs are higher than folded which can create creases in the fabric.