2 years and up. The blocks that bend the rules! Designed to support key developmental milestones through interactive tactile and sensory play, the Jelly Blox Stash 'N Stack 2-in-1 Storage Set brings wiggly, hands-on construction fun to young builders. Some of the uniquely designed blocks feature sensory fillings like sand, foam balls, and mini stars, encouraging further exploration. With 30 colorful Jelly Blox pieces, this set offers limitless creative possibilities. The storage container doubles as a building plate with a lid that flips upside down for added play value. Rigorously safety-tested—including drop, twist, and pull tests—Jelly Blox meet stringent global safety standards, ensuring safe, worry-free play.