New, in box never opened. From a non-smoking, no pet home. Safety: Coodoo Magnetic Blocks have been finished the 3rd generation updation - that's stainess steel security for both the magnets and plastic housing structure, which can effectively protect the contact surfaces from corrosion by magnets friction, and prevent the magnets coming out by possible crack, thus extend the tiles' use-life and avoid kids' accidental swallowing. So our magnetic blocks are much safer than others. Compatibility: Coodoo magnetic blocks are compatible with major brands in markets. You can extend your existing magnetic blocks set by adding more building tiles. This time, Coodoo magnetic blocks with stainess steel security and stronger magnets will be a safer and more reliable option for you to consider. Educational: Besides being appropriate for both indoor and outdoor activities, this Magnetic Blocks set is also a highly regarded educational resource and designed as preschool toys. Children can develop math, science, spatial, and tactile skills while learning how to problem-solve and work as a part of a team. Suitable for ages three and up. Creative Fun: In today's world, we are all looking for ways to educate our children and keep them busy. Why not accomplish both with an educational and hands-on magnetic construction toy set that allows them to express their inner creativity? We Encourage Children to Be the Makers of Their Own Worlds. Anything they can dream, they can create! Boredom Buster