Velcro Heavy Duty Stick-on 50x100mm Strips White Do NOT use on freshly painted walls, wait for paint to cure/dry for a full 4 weeks before applying / Non-Recommended Substrates Fabrics, dashboards, flexible vinyl / Recommended Substrates-Flat smooth surfaces / VELCRO Brand fasteners with general purpose adhesive are recommended for smooth surfaces and for indoor or outdoor use Clean and dry surface before application. Peel strip from release liner and press firmly into place, with special attention to the edges Adhesive reaches maximum strength after 24 hours. Note: Not recommended for fabrics, dashboards, flexible vinyl or underwater use. Continued exposure to full sunlight can damage fastener