Are the materials used to make this product safe? Our baby toys have passed the US children's product certificate and test report. They're made with high-quality materials and custom made for your baby — durable and safe, so you can rest assured! What's inside our toy set? Our sets come in a color box. There are 19 small parts in total: 12 soft building blocks of different colors + 6 stacking rings of different sizes and colors + 1 multifunctional octopus pull rope toy. How long can this product be used? Our playset is suitable for babies from 6-24 months. Of course, if the baby likes, he can be used for a longer time. As the child grows older, it can improve the various abilities and cognitive levels of the baby! How do I clean them? We recommend rinsing with soap and warm water (do not soak) and allowing to air dry. If you choose to use the dishwasher for cleaning or soaking, please drain all the water inside and dry it after cleaning. Is this product really as good as advertised? Yes. It will be perfect teething toys and montessori toys for your baby.