When sizing keeper gloves, it's important to note that goalie gloves are not intended to fit like other gloves and should be worn 1/4" to 1/2" longer than the length of your fingers. Larger gloves provide increased ball-blocking ability and grip ensuring as big a hand as possible in front of the ball.
With gloves being longer than the fingers, fingersaves (protectors) are recommended. These are designed to be placed into goalie gloves reducing the risk of injury to fingers.
To determine glove size:
Measure the length of your hand from the top of your middle finger to just below your palm of your largest hand.
Round this number up to the next highest inch and then add 1" to the measurement.
Example: If your hand measures 6-3/4", round that number up to 7". Add 1" to the measurement which gives you 8". So, a 6-3/4" palm would require a size 8 glove.