When you're looking for a way to add little extra something to sex - more firmness, stamina, or (lots of!) vibration, etc. - Envy's Rumbler Ring has you (and your cock/strap-on) covered.
Once it's slipped over a penis, a harnessed toy, or any favorite penetrator, Rumbler's thick, rumbly, super-powered stimulator will sit directly in the path of a partner's clit, 'taint, and outer sweet spots in general. Playing solo? You can flip it around to target your own, too.
If a penis is involved, Rumbler's snug constriction can help reign in and prolong a hard-on and even make an orgasm more intense. However you play, you'll be head over heels (metaphorically, probably) for ten VERY powerful vibration modes controlled by a button.
The silicone Rumbler is body-safe and easy to clean and care for. Wash it with mild soap and water, or use a favorite toy cleanser. You can add slipperiness with any water-based lube you love, but please keep it away from silicone-based lubes and other silicone toys.
*Rumbler's rings stretch from about 1"/2.5cm and 1.75"/4.4cm