The Tots and Kisses Eco Mini Tower comes in a unique rainbow colorway to maximize Montessori learning for our little ones. Reinvented without safety hazard center poles, each silicone round clicks and stacks. Improve motor skills, hand-eye coordination, or bring during bath time. The blocks are very easy to clean, no tiny holes where water can go in and harbor bacteria. Needless to say, free from BPA, phthalates and all other unsafe chemicals.