This toy is great to extend both a male and female partner's sexual pleasure, and could be used with just a dildo as well.

Here are four separate ways the toy can be used:
1. Loop one ring around the cock and keep the little "stimulator nub" in the other ring, rotated so that it is above the shaft. The stimulating nub will rub against her clit in missionary position (or her anus when entering from behind!)
2. Rotate the ring around your cock so the stimulating nub in the other ring is against the balls. Depending on which way you have it facing, this can either stimulate her clitoris or anus depending on position, or it will caress the scrotum with each thrust.
3. Pop out the stimulating nub, then loop one ring over your cock, and pop your balls through the other ring.
4. Do position 1 with your favorite dildo. Ta da! Instant clitoral or anal stimulation.

The texture of this toy is wonderful. It's super soft and stretchy, but not TOO stretchy like a jelly material. Also, it is made of 100% medical grade silicone, which makes it safe to boil and sterilize for use with multiple partners (or just to keep things super clean!) Keep in mind that the silicone material means that you cannot use this toy with a silicone lube. Stick to the water-based stuff, or else you might find yourself with a melted cockring!

The shape and design is very well-thought out. The partner I experimented with this with has a comparatively slim penis, and the ring fit him just snugly and very comfortably. However, it is extremely stretchy and could very easily accommodate a much larger shaft/balls. Be careful putting on/taking off the ring, as the soft material easily snags a pube here and there. When in the other loop, the stimulator hits my clitoris or anus just right, so I feel the comparative sizes and distance between the two rings is just right.

For a smaller shaft or a tighter feel, one of the rings is smaller than the other, so you could just switch into that ring instead of the larger one.

Because this toy is 100% silicone, cleaning it can be done by either washing it or boiling it. The nature of the material makes it poreless and unable to harbor any kind of harmful bacteria. However, it's quite soft in texture, and tends to pick up a ton of dust and lint, so after cleaning mine I pop it into a Ziploc in the toy box, which seems to keep it relatively lint and dust-free!