Sure. Google is your friend, here.
I should charge you for this, though. ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
So. it's
not the CBA. The CBA is more concerned about compensation & benefits. Article 30.1 of the CBA basically says it's up to the League to create the rules:
(
https://cdn.nhlpa.com/img/assets/file/NHL_NHLPA_2013_CBA.pdf)
(the 2013 CBA is still in effect, per the 2020 MOU)
30.1 League Rules. Subject to Section 30.3, the NHL, each Player, and for purposes of this
Agreement, each Club shall be bound by the provisions of the League Rules that affect any terms
or conditions of employment of any Player
What you're really looking for is the League Rules:
(
https://media.nhl.com/site/asset/public/ext/2023-24/2023-24Rulebook.pdf)
And section 3, Rule 9.1:
Rule 9 – Uniforms
9.1 Team Uniform – All players shall be dressed uniformly with approved
design and color of their helmets, sweaters, short pants, stockings
and skates.
Altered uniforms of any kind, i.e. Velcro inserts, over-sized jerseys,
altered collars, etc., will not be permitted. Any player or goalkeeper
not complying with this rule shall not be permitted to participate in the
game. For violations, refer to 9.5
Let's be clear, "with approved design" is a catch-all by the league. Which lets them unilaterally decide whether something is allowed or not.