Building blocks are a great way to encourage imagination in a child. They also aid in the overall cognitive development while improving hand & eye coordination, logical thinking, understanding of colors, shapes and assisting in wrist and motor development. The pieces are big enough so they are easy to hold, and have no sharp edges so the pieces don't hurt. This set contains 38 patterned, natural finish and colored blocks in wood, in many different shapes. Each block is in the multiple of 38x38x38mm. The set comes in an attractive wooden box that is easy to store.