Labels can be permanent or repositionable; once applied, numbers & letters are there to stay - unless you want to change them. Made of B-498 plastic coated cloth with pressure sensitive adhesive that sticks to any clean, dry surface. Choose from 8 different sizes of letter assortments or number assortments. Number packs contain all numbers from 0-9; number of cards vary according to their frequency of use. Color is black on yellow. Standard package: letters - 25 assorted cards; numbers - 25 assorted cards.