This product, the Children's Wooden Educational Toys Montessori Early Learning Word Spelling Letter Groove Practice Board Pen Control Training, is designed for children aged 3-6 years old. It focuses on the theme of occupations and offers a unique concentration and pen control training experience through a style of Blind writing board. Utilizing Montessori teaching aids, this educational building block set includes letters and a pen, as well as a handy storage wooden box. The material used is top quality wood, ensuring safety and durability for children. Please refer to the picture for specific size specifications