Dear friends, the following is the product description： 1.Compatible with building blocks 2.100% brand-new. 3. Made of environmentally friendly materials 4.Package: New plastic bag. 5.You need to make your own toys. It is very suitable for children to play and study. Dear friend if you still have anything not understand about the product need help, please contact me, i will reply you as soon as possible, looking forward to talking with you.