To find the right size, measure your larger hand (usually your writing hand) at its widest point without a thumb. The circumference of the hand is measured very firmly around the hand. Tip: If you do not have a tape measure, you can use a string. Measure the circumference of the hand with the string and then measure the length of the string with a ruler. This measurement result allows you to select the correct size from the selected size chart. (The size chart can be found on each product page.) If the measurement is between two sizes, we recommend rounding to the nearest half or full size. When rounding to the nearest size, consider the length of your fingers. If you have long fingers or keep your nails long, choose a larger size. If the model of your hand is more wide than the long model, choose a smaller size - this way the fingers are not too long. The glove should sit firmly at the beginning, as the leather stretches slightly in use and shapes in your hand over time.