Opal Creek mitts are a deliciously cozy alternative to traditional mittens. They are knit in the round from the cuff up in one piece. Afterthought seams open up both the thumb and the pop up top like magic to create super comfy convertible fingerless mitts. There are three sizes to fit adult hand sizes 7-9 inches (17.5-23 cm) measured around the palm at the widest point.