Material: The double-sided adhesive Velcro is made of nylon and polyester. The perfect combination of these materials makes the tape more flexible and durable. Non-flammable, heat and cold resistant, it offers good toughness and elasticity, and is reusable many times. Very suitable for indoor and outdoor use. 5 meters (length) x 20 mm (width): The kit contains one roll of Velcro and one roll of Velcro. The Velcro is finely detailed and moderately thick for maximum adhesion. Ultra-strong Velcro: The Velcro backing is evenly adhered. Velcro is a non-porous alternative to nails and hammers. Its high-performance bonding technology keeps objects in place. The adhesive reaches its maximum strength after 24 hours. Please wait 24 hours before pressing the Velcro strips together to join two objects. Easy to use: Cut the adhesive Velcro to the desired length, then remove the protective film from the adhesive tape. The self-adhesive Velcro is easy to use, durable, and leaves no traces after removal. Tips! Please stick the Velcro on a dry and clean surface. Safe to use: The self-adhesive Velcro is ideal for sticking to smooth surfaces such as glass, tiles, plastic, metal, mirrors, and smooth wood. It is suitable for many DIY projects, at school, in the office, at home, and outdoors. Ideal for hanging objects or displaying decorations.