The surface is very smooth and the size is suitable.Can hold it with their fingers and play with it. It feels great to the touch.This is a Shape Sorter toy with different shapes.Increase their sensitivity to color and cognition of geometric shapes, and stimulate the potential of the brain. Montessori toys is a perfect early educational toys for kids.It is a great choice for Gift, parent and child interactive at home, perfect for toddlers.Contents : A Animal Column Set Toy.