4 years & up. Spell out over 500 sight words and word family groupings. Letters are printed differently on each side with uppercase on the front and lowercase on the back. Vests are brightly printed, laminated and color coded to indicate vowels and consonants. Duplicates of a, e, l, n, o, and s. Set of 32 vests measure 8.5" x 25". Includes list of words and teacher guide.