This toy is great for breast play. We love the bands that slip over the glass--once the nipple is in, just pop the band off the glass onto the nipple. My Sir is not too comfy with the thin nature of the glass. He is always afraid the glass will break as he is putting the bands on. This toy is not suitable for pierced nipples. A close friend had one of her bars turn sideways in the glass bulb and it took a lot of manipulation to get it out without breakage.

The suction is not very great but it does manage to pull the nipple in. I do not know how well this will work with larger-sized nipples, as mine are not very wide. The bands do come in 3 sizes. I have to use the small one, as the others fall right off. Also, a small bit of water-based lube helps the nipple slide into the chamber with little to no irritation and pulling. If you are into heavy breast play then I do not recommend this but for lightweight kinksters, go for it. Just be careful--as I said, the glass is fairly thin.

The glass is very smooth and has a rolled edge to prevent biting. As I said before, the glass is very thin. The rubber suction bulb has a design on it and can be slippery if you get lube on it. The rubber rings are fairly tight and require a bit of manipulation to get on. The first time we used them, the glass was irritating. So we used a small amount of water-based lube, and my nipple slid along the glass with ease.

They measure around 2.5" and fit nicely in a male or female's hand. The suction bulb is a bit firm, and so are the rings, but they loosen with use. The only design flaw I have seen is the very thin glass, as stated above. We handle these with kid gloves, as we are worried about breaking and chipping.