All pieces of all of our Tinker Totter themed items are mix/match and have universal fits so really the play is endless! These adorable robots will please space-crazy kids and their eco-minded parents! Everyone loves to stack and connect the chunky components to create colorful robots of all shapes and sizes. Whether you are building four little robots to help defend your intergalactic base, or you build them into one super-bot, there is endless fun and combinations to be had! All of the pieces are made from rubberwood, with child-safe stains, and super easy to clean.