The best part of these rings are the soft and stretchy material that most ScreamingO products are made of. It doesn't press on the veins and you can wear it for extended periods of time. That being said, since there are 3 rings in this pack, I'll talk about each individually.
Stonger ring - For me, it is a bit too large given it's dimensions. For others who are above average size won't have a problem with them. Material is soft and the ring is stretchy. It's about 1.9 inches inner diameter, it helps when you know what size fits you.
Firmer ring - Good size ring that is best worn around the shaft. It's may be a bit tight to be worn around your entire package even though it is stretchy. Inner diameter is about 0.75 inches.
Harder ring - this one is definitely harder than the other rings. It doesn't stretch very much and if you can get it around your shaft, you don't be able to wear it for very long. I would not attempt to put this one around your entire package. Like the firmer ring, the inner diameter is about 0.75 inches but as stated above, it doesn't stretch very much compared to the other rings.
I'm pleased with the rings, with the exception of the stronger ring being a bit large for me. I personally give this 4 stars mainly due to the fit, but they are still amazing rings I would recommend.
Reviewed by: LK from Toronto on 1/27/2017