Lisa Yang %22Aspen%22 fingerless gloves with thumb opening Cashmere Made in Switzerland To determine your glove size, measure the circumference of your hand around your knuckles, excluding your thumb. Then pick your glove size based on the measurements below. For the most comfortable fit, you may want to go up a size if you fall in between these numbers. S=6 to 6 1/2 inches M=7 to 7 1/2 inches L=8 to 8 1/2 inches