Finish with your family and gain a great sense of accomplishment while enhancing your feelings. Compared with flat puzzles, 3D puzzles are more challenging and can also be used for hands-on and thinking skills. Size:56x56x56mm Weight:85G Packing:240pcs/ctn G.w:20kg 1 x cube Periodic Table Learning Magic Cube Environmental Protection Material: Made with original and environmentally friendly materials, non-toxic, safe to humans and the environment. For all ages with high quality rotation and superior quality, good performance for fault tolerance. Great Gifts: Ultimate Gift for kids, friends, family members, beginners and professionals. We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!