Review: Oxballs Ergo Butt Plug, Super Soft Silicone

I’ve found the butt plug of champions: it’s the Oxballs Ergo. The *design* of this plug—it’s so well done, it’s hard to put into words. But I like words—a lot!—so I’ll do my best!

Chunky and Super Soft (Smoke), my small Ergo is. Oxballs Ergo plugs—which come in 5 sizes—are thick for their length, to make your ass feel full. And, unlike the (also awesome) SquarePegToys Egg Plugs, they’re curved. These two lines of plugs are similar in several ways: like the multiple sizes of each, the anchor bases, the proportions, and the very soft silicone. So this Oxballs Ergo review will mainly be a compare-contrast between it and the SquarePeg plug (another favorite of mine, and of my colleague All Male Sex Toys). Why choose Oxballs Ergo vs. an Egg Plug?

The Curve

Oxballs’ Ergo has this slightly wavy shape on one side, versus the uniform (you guessed it) egg of the Egg Plug (available in NINE different sizes). I was surprised how much pressure that curve translates into when Ergo is actually inside. I can really feel the wave pressing forward (belly-button side) when I have Ergo turned the way it’s “supposed” to sit. I like to wear it backwards sometimes too, because the pressure points remind me of being taken doggy-style, by an upward-curving penis.

I don’t have a prostate, but I do know how to stimulate one. And in size small, the top point of the Ergo’s wave is an ideal depth to gently rub on the prostate. It’s not the force of the Njoy Pure Wand, for sure; but it’s a light touch that will stimulate as you go about…whatever it is you’re doing while wearing Ergo. With me, I feel it barely pushing forward into my back vaginal wall. Really, it’s about the full feeling with Ergo.

The bottom part of the wavy side juts out slightly more, so it’s the most noticeable part. Like the Egg Plugs, I feel it pressing down into my anal canal, the upper inner sphincter, so gently. It’s like a blob…a big, soft blog…to squeeze around.

The Base

The anchor shape of the Oxballs Ergo’s base is really pronounced, with a big upward curve in front to press into the perineum. (Or the back of my labia too, in my case.) Or, when I turn Ergo “backwards,” the bigger end of the base cinches right in underneath my tailbone.

The front tab of the anchor base is a bit larger than the back one, to give your perineum some love.

Like the Egg Plug, the base is fairly thick so there’s no possible way this soft toy can be drawn up into the rectum accidentally. You won’t forget that the base is sitting in your crack. And that’s good, because the soft silicone feels lovely.

The Neck

Some stretching progress, with a few of my favorite anal toys. From left to right: Egg Plug XS, b-Vibe Snug Plug weighted plug 2, Ergo S, and Hankey’s Anaconda Xtra-Small series.

Ergo’s neck is less floppy than the Egg Plugs’. For me this makes Ergo a helluva lot easier to insert. Once my ass was well greased, Ergo slid in nicely (even though it’d been a month since I’d taken a toy this size: 5.25 inches around, so 0.75″ above average girth).

Ergo’s neck didn’t fold over so much as I was trying to slide the plug’s head in. I like minor details that make my life easier.

The Silicone

Oxballs’ Super Soft Smoke silicone is quite soft, approximately the same as Hankey’s Toys’ 75% Soft firmness or the medium/5 density of most fantasy dildo makers. (That said, if you want more pressure (a legit preference), check out this firmer version of Ergo.)

That makes it just barely harder than SquarePegToys’ SuperSoft Bronze. When I’m holding the two in my fingers, I have to work to discern a difference. Clenching around both toys is great. Still, with long-term wear…I feel like the minimal firmness difference comes through, in that, if I was forced to choose one plug to wear for three-plus hours straight, I’d go with the Egg Plugs.

Also, Ergo is not quite as slick-glossy as the Egg Plugs—instead, it has more of a (smooth) matte feel.

The silicone is described as “Smoke”: it’s half gray, half black, with glittery sparkles. It’s distinctive, and I respect that.

Oxballs Ergo Variants: Blueballs & More

Updated! Peepshow Toys asked Oxballs to make a “Blueballs” version of the Ergo after I wrote this review. It’s smart, because Blueballs is a hella attractive color, two shades of blue that shimmer. Oxballs makes cock-rings, dildos, and plugs in Blueballs! When I got a package of Blueballs toys, I started taking pics immediately b/c they’re so photographic:

Oxballs Ergo Blueballs plugs Phallophile Reviews
Doin’ my best model pose here, y’all: Medium-size Blueballs Ergo is front and center (left); with Oxballs Buddy dildo, Ergo size small (center, next to dildo), & Oxballs Balls-T ballstretcher (right).

So the Blueballs color looks great, that’s a given. But the feel? Well, the Blueballs Ergos’ silicone is just a lil’ different than the Super Soft Smoke Ergo pictured earlier in this review.

The Ergo plug in Blueballs is about a 2A-shore silicone, vs. the 00-50 (squishier!) durometer of Super Soft Smoke. Here’s a listing of Oxballs Ergos from firmest to softest:

Basically, the firmer a plug is, the easier it is for me to insert; but then the super-squish is so delightful long-term. So it’s a trade-off: Which matters most, squish or lazy insertion? I think the Blueballs bright-blue Ergo is a nice middle ground—quite soft but still easy to get past my sphincters. And I like wearing the small size around the house for hours while I sit, do laundry, write, take pics, etc., etc.!

Oxballs Ergo plugs Blueballs Smoke
Small Ergos (not small by most plug standards!) in Blueballs & Smoke; vs. medium Ergo Blueballs.

I got the medium-size (=chunky!) Blueballs Ergo to try out vaginally, because anally I prefer not-big things… And it’s been fun testing. In the end, I would still choose the Oxballs Honcho as my top vaginal plug. Oxballs Ergos’ upward-pointing tabs are shaped for the butt crack, not for the vulva, IMO. They feel a little clunky farther forward, with the front tab poking my clit when I sit on something hard. (No vag-plugged bike riding with Ergo!)

Ergo, though, remains a favorite for my ass (size small!), and I honestly can’t choose between Super Soft Smoke and Blueballs. If you’re drawn toward the blue color, I say go for the latter; or pick Smoke if you want a more muted shade and just a little more flexibility in the neck.

Overall Thoughts

The Oxballs Ergo is extremely ergo-nomic. (They weren’t lying when they named this plug.) It does the work of stretching your ass (comfortably!) for you. I would strongly recommend the Super Soft Smoke version, because I can clearly feel its two pressure points pushing into my anal canal. It makes me think of being stretching before and during anal sex.

Ergo is very wearable as a long-term plug. I recommend it more frequently than the SquarePegToys Egg Plugs to anyone who wants (light) prostate stimulation. However, I think the Egg Plugs have a slight edge for truly extended wear, because Ergo’s wavy shape eventually becomes too much and I want to take it out. I’m talking about over three hours here! I am super-sensitive pressure, so I would definitely recommend Ergo’s extra curvy bulk to anyone who wants to feel a little more in the long run.

Oxballs makes damn good anal toys, and that’s a wrap. 5/5 stars are well-earned.

Find the Oxballs Ergo in Super Soft Smoke or in metallic Blue Balls.

* * *

Oxballs Ergo


Silicone feel


Ergonomic design


Material & production quality



  • A pro stretching plug --- lots of sizes.
  • 100% platinum silicone, handmade in the US.
  • Chunky perineum tab.
  • Soooo smooshy, it's delightful.
  • Shimmery smoke color (or in Blueballs!)


  • Not the best *first* anal toy, as it is soft and not tapered.
  • Lovers of hard pressure should look elsewhere.
0/5 (0 Reviews)

One thought on “Review: Oxballs Ergo Butt Plug, Super Soft Silicone

  1. andy

    November 5, 2019 at 7:25pm

    “upward-curving penis”

    I really dig this particular new yoga position!

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