A clasp including a protrusion portion with a protrusion, and a receiving portion defining a receiving cavity configured to receive the protrusion portion is described. The protrusion is securable in the cavity via frictional fitting of the protrusion into the cavity. The frictional fitting of the protrusion into the cavity creates a secure association between the receiving portion and the protrusion portion, and the receiving portion includes a first arm and a second arm extending from a receiving portion base. The first arm includes a first arcuate recess and the second arm includes a second arcuate recess opposing the first arcuate recess, and the first arcuate recess and the second arcuate recess define adjustable width of the cavity.