To find your glove size, measure around the palm of your hand at the widest part, excluding your thumb. If you are right-handed, measure your right hand. If you are left-handed, measure your left hand. The circumference in number of inches is your approximate unlined glove size.
If you have long fingers or nails, you may need to add a half size. For lined Geier gloves, we recommend sizing up at least a half size to allow for the added lining.