These bracelets are absolutely beautiful and much better quality than I had expected! Even my husband was intrigued by his. The adjustable set has a nice, strong/sturdy string, that's easy to adjust on your own. The beads are stationary, unlike other bracelets I've gotten that shift up & down the string if it's not fully closed. So if you have bigger wrists and can't pull the bracelet completely closed, then you don't have worry about your stones separating.
The elastic set is just as nice & well fitting. I have bigger wrists & mine is snug but not too tight that it's uncomfortable. My husband has smaller wrists and his, too, fits nicely on him. The set looks great together or as worn individually! Both of us benefit greatly from what the gemstones offer, so I split them evenly between us with a ying-yang effect.