This unique configuration with its three aluminum stays forms the "TeePee" that comfortably supports the MCP (metacarpal-phalangeal) joint. Each stay can be shaped and contoured with ease to provide a 'custom fit'. The TeePee does not restrict wrist motion and fits the left or right thumb.
How to Measure:
Measure the distance from your wrist to the thumb IP (middle) joint, to determine correct size below
X-Small: Under 3.5" Small: 3.5" - 4.125" Medium: 4.125" - 4.625" Large: 4.625" - 5.125" X-Large: Over 5.125"