Height Growth Training: the jump touch counter has number counting function, every time your child hits the high, it can get an instant count; The vertical jump touch counter will cultivate childrens interest in high jumping, help exercise high jumping, and promote heightGrowth Height Record Chart: stick the wall ruler near the height touch counter, its convenient to know the jump touch height, and also clearly records your childs height gain, encourage your children to stick to sports and grow quicklyNice Material: the child growth ruler is made of thick paper with waterproof coating, its long lasting and can accompany childrens growth for many years; The high jump counter is made of nice plastic, button is flexible, sturdy and serviceableEasy Installation: to stick height ruler and high touch counter to the wall easily, does not hurt the wall, can be removed to use repeatedly, and is stable and does not shakeBatteries not included