Alphabet Pebbles, Word-Building SetInvite children to explore word building in a playful way with these tactile pebbles. Each pebble is engraved with a letter of the alphabet and the set includes the right combination of letters for children to make familiar words. Durable for use in sand, water and outdoors, each pebble measures about 1. 5 inches. Each set includes three of each vowel and two of b, c, d, f, g, h, l, m, n, p, r, s, t, y and one of j, k, q, v, w, x, z. Age 3+.