I bought these and some others as I was not sure what I would be comfortable with. The magnetized bead and the elastic string are perfect for mala use and because of the elastic they never feel too tight. I am a large man and after a few wears and uses they stretched a bit to fit me perfectly. The bead size is about 6mm I have a few that are 8-10mm and they are too big and look terrible because of their size. I now mostly use my 108 Mala necklace around my wrist but use this when I want to have something to practice with and that is super durable.