This patch is iron-on for permanent application. Instructions: Place the fabric patch where you want it, and for best results, cover it with a thin layer of white cotton fabric. Set your iron to the cotton/linen setting (around 300°F), and press down for 20–30 seconds. Let it cool completely. If you're worried it might come loose with time, you can secure it by sewing a few stitches around the edges. Measurements: 4-leaves Clover: 1.9 inches *1.2 inches 3-leaves Clover: 1.7 inches *1.3 inches Each for $4. Pick up around Fairway Market in Quadra.