Observational PowerThis mess free coloring for toddlers watercolor card is a set containing 26 watercolor letter cards, water wow books suitable for toddlers to use, equipped with 2 water brushes and 2 metal rings, making it easy to carry on the journey. Spatial PerceptionMess free painting for toddlers learning tool provides a hassle free learning experience as it is water-based and does not require erasing anything! The ruler of each watercolor card is exactly the size of the children's palm. Each letter card has a traceable letter and illustration on one side, and four words and images starting with that letter on the other side. Learning PleasureThrough watercolor color wonder paper, children can develop hand strength, visual perception skills, and precise grip skills! Each letter has its own card, allowing children to focus on one letter and learn the alphabet and words related to each letter. This tactile and additional reward helps with the process of learning letters. Visual PerceptionThis letter watercolor card is portable and suitable for children to use. Use a fountain pen to color the card, and the image will magically appear! The card has perforations and can be fixed together with a metal ring at any time without losing any cards! ReusableThese watercolor cards are reusable and sustainable. They are made of cardboard coated with water-based film on both sides. After a few minutes of use, the images on them will disappear and can be reused! This is a perfect road travel toy and an ideal gift for birthdays, Christmas, and other holidays.