Thank you for viewing. This is one cosmos coaster. The size is approximately 15cm (including the flower part). The center part is about 7cm. Please note that this is a rough measurement by an amateur, so there may be some errors. Please refer to the images. The cosmos flower is created by fixing one point. Therefore, it is somewhat movable, so please adjust it yourself when the product arrives. Based on TSUMUGI's video, it was basically made with acrylic yarn. The main color of the coaster is sand beige. I try my best to knit carefully, but it is a handmade item by an amateur. There may be distortions, looseness, and fraying. Each one has a different texture and size. There are traces of yarn processing and knots from the time of purchase. The color may differ slightly from the image. Please understand and acknowledge this before purchasing. When shipping, it will be placed in an OPP bag and sent. In that case, it may be compressed. Thank you for your understanding.