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Law 40.2, which deals with the specifications for wicketkeepers' gloves, states that: If,.... the wicket-keeper wears gloves, they shall have no webbing between the fingers except joining index finger and thumb, where webbing may be inserted as a means of support. If used, the webbing shall be:
(a) a single piece of non-stretch material which, although it may have facing material attached, shall have no reinforcements or tucks.
(b) such that the top edge of the webbing-
(i) does not protrude beyond the straight line joining the top of the index finger to the top of the thumb.
(ii) is taut when a hand wearing the glove has the thumb fully extended.