HOW TO SIZE:
See above size chart.
S: 0 - 15" (for very skinny thumbs or fingers)
M: 20 - 25 mm"
L: 25 - 30 mm"
XL: 30+ mm (for THICK thumbs)
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.