The Premium 2 Sided Blockout 18 oz. Double Sided Banner is engineered to achieve 100% opacity to blockout images on the reverse side or image washout due to lighting behind the sign. This product is the best choice for outdoor pole banners or double sided banners when there is exposure to a harsh environment. This reinforced laminated vinyl banner material is manufactured with extremely strong blockout polyester scrim, and it is a more economical choice than our 18 oz. Smooth Blockout as the Smooth Blockout has a super smooth finish.