As a reference, measure using a string or ribbon around the circumference of the thumb. Measurements should be made wearing batting gloves if you play wearing them or not if you don't wear them.
Large:
2 3/4" circumference (generally above 205+ lbs)
Medium:
2 1/2" circumference (circumference (generally 130-205 lbs)
Small:
2 1/4" circumference (generally good for youth and adults under 130 lbs)
Use this as a guide. If in between sizes, we generally recommend going with the smaller size for a secure, snug, performance fit.
Please contact us with any questions. We are happy to help: info@baseballthumbguard.com
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