VELCRO® Brand Stick On Self Adhesive 24mm Oval Spots For Fabric  Black Or White By Velcro No sewing, gluing or ironing required, simply peel, stick and done! Reaches full, permanent bond after 24 hours. Works best on cotton, polyester, poly blends and nylon.   While every care has been taken to ensure the accuracy of the colours depicted in our images, please be aware that due to monitor resolution, lighting, photo processing software and other factors it is almost impossible to represent colour to 100% accuracy.