Summary Extra large pieces for small hands. Includes build-on storage case. Includes blinkin' eyes & metallic-like parts. Lots of building fun with pop-on patterns. Kid K'Nex Rockin' Robots Building Set Description With the KID K'NEX Rockin' Robots building set, young builders will love to create and play with their new robot friends. It is packed with colorful chunky KID K"NEX pieces that are easy for young hands to snap together and special parts There are blinkin' eyes that come to life with a simple touch and metallic robot parts plus "Pop-on" patterns so you can customize your new friends. You can build from the ideas booklet included or create anything your mind can imagine! The handy case makes storage and on-the-go fun a snap - and you can build right on the case too! age 3+ "