See above for sizing chart:
XL 30+ (For THICK thumbs)
Large 25 -30
Medium 20 -25 mm
Small 15-20 mm
XS 0-15 mm (For very skinny thumbs or fingers)
*Sizes determined by measuring the width of thumb knuckle. If on the line between sizes, Females should size down and Males should size up.
**Got Questions about Nubs®? Check out our
FAQS page.