The Crystal Jellies Performance Ring Set includes 3 chunky textured designs that provide extra stimulation and are ultra-stretchable for easy use around the shaft or testicles, maintaining those long-lasting erections youve always dreamed of, and prolonging your ejaculation. Phthalate-Free, Body-Safe. Width/Diameter: 1.75 in. (4.4cm)/Unstretched Inner Diameter: 1.2 in. (30mm).