The necklace is specially designed to hold a 22mm d20. The D20 it comes with is randomized but guaranteed to be cool!

To change the die, simply lift the clasp, open the chain net, place the D20 inside, close the net around the die and lower the clasp back into place. For a visual aid, check out the manufacturer’s video; https://youtu.be/aUc_9ZzqUOA?si=AQD5ND2IpAmPsfcC&t=20