Made of rubber wood, the Guidecraft Classroom unit blocks are the perfect learning kit for your kids. These engaging building blocks are finely sanded to make them splinter-free. Backed by European quality packaging, it is effectively resistant to dents and dings. This multidimensional set has 170 blocks. With a lifetime warranty and well carved safety features, they are worth the price. Easy to use and store, the blocks are delivered with an informative activity manual for your kids. Colorful and magnetic, these blocks are just ideal for broadening the imaginative and reasoning skills of the young minds of any age group.