This bright Slinky seems to almost glow in the dark. Green and yellow Neon hues come together for a flash of vivid color as this plastic Slinky stretches and bounces in its well-known Slinky style. Measures 3.875" W x 3.875" D x 3.25" H. For ages 5 and up. The Slinky original neon is a colorful plastic version of the Slinky original, first introduced in 1945. Push it along the stairs, or play with the accordion-like toy in you hands. You can't go wrong This favorite!