The Perler Pearl Beads can be fused together using a household iron or strung together to create lots of cool designs. Use with Perler pegboards and ironing sheets, sold separately. All beads are made of LDPE, which is a food-grade plastic containing no harmful chemicals. The pack contains 1,000 jewel toned beads. It is recommended for children ages 6 and up WARNING: Choking Hazard-small parts. Not for children under 3 years.