We talk a lot about the health benefits of orgasms—but it's time to address the elephant in the room. Research shows1 about 95% of straight men orgasm during every sexual encounter, while only 65% of heterosexual women do.

As part of the 37% of women who need clitoral stimulation2 to orgasm, I've felt this gap firsthand. And while communication with a partner goes a long way, I've found that a little extra help never hurts. And by a little extra help, I mean the hands-free Dame Eva II Vibrator.

Unlike the other best sex toys for couples, the Eva II doesn't require you to hold it in place. Instead the tiny device has flexible arms that hook under your labia. This keeps the toy firmly on top of the clitoris, where it delivers powerful vibrations right where you need them most.

When the Dame Eva arrived on my doorstep two years ago, I was skeptical. I loved the concept of the female-created vibrator, especially one that could solve my biggest qualm with partnered p-and-v intercourse. But it was so tiny.

I was used to bulkier vibrators, with loud vibrations that require a bit of noise-cancelling music; this toy's motor was barely larger than a cotton ball! Yet the waterproof toy boasted an impressive 1-hour battery life with at least three vibration settings. I figured it must have a few tricks up it's sleeve, or rather, wings.

Luckily, my disbelief was short-lived. The very first time I used the Dame Eva, I finished with my partner for the first time in three months of dating. The buzzy vibrations delivered just the right amount of stimulation, and I was seriously impressed with how well it stayed in place.

Eva's tiny arms might be flexible, but they're still strong enough to hold the toy in place in a variety of positions and tempos. Sure, a new set-up typically requires a few seconds to adjust the vibrator into the securest (and most efficient) location. However the Eva never interrupts the flow or feels like an intruder on your rendez-vous.

Other testers complain about slippage when things get a little too wet, but I haven't run into that issue so far despite years of testing. That being said, I do see some room for improvement.

A few positions are not conducive to keeping the device where you want it. You can typically counteract this by adding a little pressure from a finger, but it really kills the "hands-free" vibe. I also wish the vibrations could be a touch more rumbly rather than buzzy; I would likely use this toy more solo if the sensation felt a little deeper.

There's a reason everyone is obsessed with this best-selling toy! I've spent the last five years reviewing sex toys as part of my job, and I can honestly say the Dame Eva is my favorite toy for partnered sex. I don't consider it powerful enough for solo use—especially when you consider the competition—but I can honestly thank this toy for banishing the pleasure gap in my own bedroom.