This is my third purchase from Trion Z. I have been happy with my bracelets and the only reason I didn't choose the highest rating is that I would have hoped for greater durability. I lost my first bracelet when the fastening grew weak and it fell off. The second one had a band which stretched to go over my hand, and as I took it off to have baths and showers it weakened and eventually split. As I have arthritic hands I find it a little awkward to manage the fastening on my duo loop, but have now reverted to this design in the hope that it will last for longer than the others. I would be interested to know the average life span of the bracelets.