Seam Grip Seam Sealer & Outdoor Repair is a waterproof, flexible urethane formula for use in repairing surfaces or sealing seams of vinyl, leather, waterproof laminates, and both natural and synthetic fabrics. Seam Grip may be used to repair all types of waders and footwear, neoprene, PVC, rubber, and more. Concentrated and waterproof, Seam Grip offers excellent adhesion, long lasting flexibility, superior traction and abrasion resistance, with minimal shrinkage. Directions for seam sealing: CLEAN surfaces with isopropyl alcohol. APPLY Seam Grip to inside of seam. Apply thin film, holding tube opening flat against seam. Lightly squeeze and draw tube across threads. Seam Grip may also be applied with brush. Use brush to even out any heavily coated areas. LET DRY overnight (approximately 12 hours may be longer in low humidity.) CLEAN-UP: Clean hands with isopropyl alcohol. NOTE: Fully-cured Seam Grip may cling to itself when folded. After first application, lightly dust fully-cured areas with talcum powder. NOTE: All sales on this item are final.