- The 12pk Rainbow Metal Slinky Walking Coil Spring Toy is a fun and colorful novelty toy that provides hours of entertainment for children. - Made of durable metal, this coil spring toy is great for both individual play or party favors. - Perfect for birthday parties and stocking stuffers, this toy is sure to delight kids of all ages. - Stretches, wiggles, walks, and jiggles. - Fun for kids ages 3 and up