These are great for all ages and sizes! They are adjustable on the back so that they can fit the smallest or biggest of wrists. Easy to put on and adjust with a slide knot. If, after you adjust the knot, you need to trim off the excess - that is also easy to do. Just move the end bead, trim off the ends, and then tie a little knot. please be aware of the risk of choking hazards posed by small parts jewelry and use your own discretion before giving small parts jewelry to young children.