This Amazon-exclusive set includes three Slinky toys in different sizes: one Giant (3.5-inch diameter), one Classic (2.75-inch diameter), and one Slinky Junior (1.5-inch diameter). Made by the original Slinky brand, these metal spring toys can stretch, wiggle, and move down stairs individually or in pairs. Suitable for ages 5 and up, the set offers varied play options with three distinct sizes. The pack is available only through Amazon.