These are the absolute best rings. The fit is amazing and there is no other brand or style that can match it. I have been wearing rings for years and these are by far the best. 45mm is the standard. I would go down one size for the silicone. Anyways would love to see some more products. Maybe different colors.

I started out with the 45mm Power Flex. I usually wear this size in other rings. I ended up getting the 40mm. I thought it was just right, but a little too thick. About a week later, I ordered the Fusion and then got the Energy in their promo of $10 off- both in 40mm. They are just right. I do like the size and finish of the Fusion over the other one. I'm used to spending several hundred dollars on high end sterling silver and gold rings. These are perfect for what I need. I agree with others on the sizing. Because of the shape, you need to go down on your normal size. I could wear the 45mm, but it would have more of a chance of slipping off. With the 40mm, I can still get one finger under it and it is more secure. I think I'll try the 40 mm Pulse next so I don't set off metal detectors when I travel! : - )

Truly, an all day wear. I did buy size smaller. Because it’s really cold where I live. But, I’ll gladly be remeasuring for summer one.

This design is amazing for a ring. Just got it and immediately I'm satisfied with my purchase. Deciding which one to get next.just get one.

The finish on the ring is just beautiful. Well made and fast to receive.