Yoga is a soft, super stretchy, silicone erection ring with an imbedded throbby, rechargeable vibrator. Two different rings to choose from (in terms of snugness), and two different surfaces to deliver the vibration to someone else during penetration. The vibrator is easily removed for cleaning but we don't suggest submerging the vibrator. Easy plug-in recharger means that you will not run out of power in the way that can happen with those tiny-tiny watch batteries.
A nice rechargeable ER worth exploring.
Color: Blue, Gray Material: Silicone. Size: inner unstretched diameter of larger ring is1.25", smaller ring is 1". 1.5" thick with total length of 3.5". Power: plug in USB recharger cord included. Cleaning: Remove the vibrator before you wash the sleeve with warm water and mild soap. Vibrator is splashable but not submersible. Special Instructions: Do not use silicone lubricant with this toy.