Gloves and Mittens:
Your hand circumference in inches equals glove size.

Measure around a flat hand at the knuckles; do not include thumb.

Note that sizes overlap. It all depends on whether you like a loose or snug fit.

For Example:

If you are a glove size 9 but you like a snug fit, then you should buy a medium. If you are a glove size 9 but like a loose fit, you should buy a large.

Leather Care:

Keep your leather soft and supple as the day you got it. Wipe with a damp cloth using luke warm water. Allow to air dry and repeat if necessary.