Sets include 200 letters, numbers, symbols, and punctuation. Contains small parts. Made for ages 3 and up. DETAILS • Dimensions: 1" max height, Widths vary • Materials: EVA Foam, Rubber Sheet Magnets • Character Count: 200 uppercase letters, numbers, symbols, and punctuation • Packaged in a sturdy, resealable bag PLEASE NOTE Choking Hazard. This product contains small parts. Keep away from children under 3 years old. Adult supervision is recommended. These magnets will not work on glass magnet boards. These letters are made of a soft foam material and therefore are not impervious to imperfections, such as dents, or warping. However, these imperfections can usually be worked out with your fingers or a little low heat and easily reshaped on a magnetic surface.