Instructions: Fit: Measure the circumference of your elbow and refer to size chart. Use: Position the middle of the sleeve over the elbow. You may need to adjust the sleeve position a few inches up or down your arm to get desired compression and comfort. Inches Around Elbow: Medium - 8.5-10 inches. Large - 10-12 inches. Extra Large: 12-14 inches. Machine wash cold. Delicate cycle with like colors. Do not bleach. Tumble dry low, delicate. Do not iron. Do not dry clean. Do not use dryer sheets. Do not use fabric softeners. Turn garment inside out.