Our magnetic hematite bead bracelets on strings can be expanded by pulling in slack into the inner part of the bracelet. To do this, take both your hands and pull apart the last two beads of the inner part of the bracelet. It may require some force the first time to get a hang of it. You will be able to pull all the slack from the dangling sting to the inner circle of the bracelet. Then you can pull the small beads on the dangling string apart to tighten/close the bracelet.
If you continue to have issues, please watch the sizing section of the product video HERE