Seam SureTM is a fast drying water based urethane formula designed for sealing sewn seams on synthetic fabrics and breathable laminates. Ideal for tents, packs, and rainwear. Unique brush applicator allows easy application into needle holes, sewn joints, corners, and under lap felled and folded seams. Fully dries in a minimum of 2 hours at room temperature, longer if cooler. Dries to a clear, flexible, long lasting film with a nearly invisible nongloss finish. Flexes with the fabric insuring waterproofing even in cold temperatures and high wind conditions. 2 fluid ounces.