These transparent polyester buttons are universally-usable all-rounders thanks to their sleek, discrete design. Prym carries them in this version in sizes 13 mm and 18 mm with two sew-on holes. Their rounded edges make them easy to insert through the button hole, hence making them perfect for frequent use. Depending on the button size, 4 or 5 buttons are attached to the self-service card. They are easy to maintain and washable up to 30 degrees.