These chopsticks have rounded ends at the bottom and top, a small hole is already present to pass the string through and tie a knot.
The length of the string varies according to the size of the child. Ideally, the string should be the same distance between the feet and the shoulders. For children from 3 to 6 years old, this means a height of 90 to 110 cm. If you deduct head and neck height
it means that the length of the twine should be between 70 and 90 cm, that's why we give you 1.3 meters of twine.