Jessica says this crutch is designed for a 5'6" person. The basic formula for computing the proper height of a crutch is 77% of the height of the patient. As such this file will need to be scaled up or down for the ideal fit. It will need to be cut out of 3/4" to 1" ply to be strong enough. Thinner plywood may work for children's crutches After cutting, she recomends wraping the top and the handle in a standard gauze roll for padding. There are little notches in the foot to add a little friction. Rubber bands placed here might also help.