This alphabet set from Sesame Street is suitable for children ages 2-4 and includes 26 letters and a folding carrying case. 26 colorful letters are easy to learn, and below each letter is a pattern of words that begin with that letter. After learning or playing, the letters can be placed in the matching carrying case, and each letter fits perfectly in its place so that it is not easily lost. The suitcase is also the perfect size to carry around and play with while on the go. And I haven't found the pieces to be a "choking hazard"; all of the letters are a great size for small children to handle without worry. If your kids love Elmo, you can choose it without hesitation and let your kids learn while playing.