CA Bus & Prof Code Section 18723

All gloves used by contestants in professional and amateur boxing contests or matches shall be approved by the commission and constructed so that:

(a)

The thumb is not detached from the glove in such a manner that injury could result.

(b)

The soft padding between the outside coverings shall be evenly distributed over the back of the gloves, and cover the knuckles and back of the hands.

(c)

All paddings shall be consistent with the best available material and technology in order to reduce the cumulative effects of repetitive impacts.