The Je Joue silicone ring set has 3 high-grade silicone rings that progressively tighten, allowing you to experiment with different sensations and combinations, each ring has a silky soft texture that guarantees maximum comfort and can be worn! use around the penis, testicles or both! Ring Color Stretch Level: Blue: Min Green: Med Black: Max bodysafe Raincoat Vegan Phthalate free Inner diameter: 2.8cm