To wear this Doddie Weir Scotland rugby cap, simply adjust the strap with the antique buckle to fit your head comfortably. It's a one - size - fits - all cap, so it should work for most people. When it comes to care, remember to only hand wash it with gentle laundry detergent. After washing, don't wring it out. Instead, pat it down with a towel to remove the extra water and keep its shape. For drying, place it on the counter. You can put it on top of a container to help it keep its proper shape. Avoid using harsh chemicals or machine - washing, as these can damage the organic cotton and the embroidered details on the cap.