Put the power of creation in kids" hands with Skeleflex sets. They"re ball-and-socket building sets that let little builders piece together dinosaur creations with bone-shaped parts. Rigid pieces and bendable joints make for lifelike movement and extra realistic play. Create a unique creature every time by mixing up the parts -- they"re interchangeable among all Skeleflex sets.Each set includes its own carry case, plus an instruction booklet with loads of ideas for different models.