This flower will dress up your dog's collar and is hand-crocheted using Caron's Simply Soft yarn and may be machine washed on gentle and dried on low setting. Do not iron. Approximately three inches in diameter, the flower slips over the collar through the loop on the back. The center of the flower is open, and the dog collar will show through the center of the flower. Designed to fit a one-inch collar, it can also be used on 3/4 inch collars as the pressure of the collar on the dog's neck will hold the flower in place. If you have special colors you would like used, this yarn comes in many colors. Just let me know.