Guide updated on July 25, 2026 to integrate the latest technologies (IronAI, connected heads, ROS Max) and clarify once and for all what is included by default or not depending on the brands.
⏱️ Reading time: 13 mins
📋 Table of contents
- Introduction: the jumble of options, finally sorted out
- Face options: ROS head, makeup, and lash/hair placements
- The skeleton and internal structure
- Chest, buttocks, and thighs: softness at the heart of realism
- Hands, fingers, and feet: the detail that never lies
- Orifices: soft, self-lubricating vagina and vaginal contraction
- Robotic features and AI
- “Universal” options: Elf, Pregnant, AIO...
- How to choose your options based on your use?
- FAQ: Options for silicone dolls
📋 TL;DR: Key takeaways
Do you feel lost between “ROS”, “EVO skeleton”, “gel buttocks”, and “vaginal contraction”? Don’t worry, it’s normal; product pages sometimes look like rocket manuals. Here’s what matters most:
- Silicone dolls have default options (gel chest, EVO skeleton, articulated fingers) that vary depending on the brand.
- paid options mainly concern buccal realism (ROS), vibrations, motorization, and AI.
- The ROS (Real Oral Structure or Real Oral Sex depending on the brands) has nothing to do with a simple hinged jaw: it’s THE feature to create expressions—and for those looking for a welcoming mouth!
- AI sexbots (IronAI, connected heads, AI boxes) add automated text and voice dialogue.
- Not all of these options are available on every model: I detail who has what.
Introduction: the jumble of options, finally sorted out
I’m not going to lie to you: the first time I opened a silicone doll customization page, I felt like I was configuring a NASA-made video game console. Between the “EVO skeleton,” the “ROS,” the “vaginal contraction,” and the “hard hands,” you end up wondering whether you’re buying a realistic sex doll or a spacecraft.
So, as usual, driven by my little analytical pervert instincts, I dissected everything for you. In this guide, we’ll go through all the options available on the silicone doll market: what’s offered by default, what costs extra, and what’s reserved for the latest-generation sexbots. Hold on tight—we’re going from the face to the toes (literally).
Face options: ROS head, makeup, and placements
ROS head: the must-have star
The ROS (sometimes called ROS Max with Irontech and Real Lady) is probably the most fantasized option on the market. Unlike a head without a mouth or with a basic orifice, ROS offers a deep oral cavity of about 17 cm, with an internal texture designed to simulate sensations close to reality. In short, it lets you explore sensations you thought were reserved for real life.
Heads-up: not all heads are ROS-compatible. Always check the product sheet before going for a face that catches your eye. If you’re interested in the Real Lady or Irontech brand, refer to this article to understand the difference between ROS and ROS Max.
👄 Convinced by ROS?
Read our full ROS article to understand all the ins and outs.
Read the article →Ultra-realistic makeup (face and body)
The ultra-realistic face makeup as well as the ultra-realistic body makeup are included by default with all of our brands. We’re talking about natural redness, skin gradients, and finishes that fool the eye. A clear improvement compared to the “plasticized” makeup from just a few years ago.
Eyelash and hair placements
Lower eyelash placements are the standard for almost all brands. Upper lashes are always glued in place, so you can easily switch your style between very natural or very made-up.
Implanted hair adds that little bit of soul that makes all the difference in a photo. It’s the kind of detail you usually don’t notice… until it’s missing. But be careful: based on my experience, it’s quite fragile, and it’s not for everyone. Pitfalls to avoid with implanted hair:
- Suitable for display or photo use, not really for sex doll use that requires moving the doll a lot.
- Never detangle with a brush; always do it by hand, and with great care.
- Prefer straight hair—wavy hair tangles much more, and you risk significant hair loss if it’s implanted.
To go all the way, check out our article to learn everything about wigs in the smallest details.
The skeleton and internal structure
EVO skeleton
The EVO skeleton is currently the norm on most high-end silicone dolls. It’s a jointed internal architecture that allows for more natural poses, better weight distribution, and increased resistance to repeated tension. Without it, forget acrobatic poses—your doll would be heavily limited in its positions, and expressions would take a hit too.
🦴 Did you know? Starpery has redesigned its skeleton with 7 concrete improvements. Discover the New Gear Skeleton →
Weight reduction
Almost included by default on all silicone dolls, weight reduction lightens the internal structure without sacrificing visual realism. A great advantage if you plan to move your precious doll regularly (or hide it quickly).
📦 Read before receiving your doll: how to store it safely.
Chest, buttocks, and thighs: softness at the heart of realism
Gel chest
The gel chest has become an essential must-have. No more hard silicone that doesn’t move an inch—place to a chest that bounces and deforms naturally under fingertip pressure. A basic you simply can’t compromise on today. For the most indulgent, you’ll love seeing this chest “bouncer” during the act like a real one—a treat for the eyes (among other things 🙂 )
Gel buttocks, gel thighs, and soft belly
On the most advanced lines (equivalent to series 2.2CF/2.2 Max from Bezlya, for example), you’ll find gel buttocks, gel thighs (“softer thigh”), and even a soft belly. The idea is simple: recreate those body areas that, on a real woman, are naturally softer than the rest. The feel is unbelievable—sometimes even disorienting.
🎥 Video included
Top CY’s Gel Butt 2.0 redefines the realism of the buttocks, and you can clearly see it. Discover the texture and movement in video.
▶️ Watch the video →Overall soft silicone
Some brands even offer soft silicone across the entire body—an alternative for those who want softness everywhere instead of only in certain strategic areas. The only real things to understand about this option are:
- When the option isn’t offered, it means the brand uses softness by default.
- If you have the choice between the two options, then the softness is oriented toward sensations, the classic “exposure” option is more realistic visually, but it isn’t suitable for intercourse.
In short, if you read me regularly, it’s straight-up soft silicone!
Hands, fingers, and feet: the detail that never lies
| Option | Description | Availability |
|---|---|---|
| Articulated fingers | Each phalanx moves individually | Nearly standard |
| Rotating wrist | 360° wrist rotation | Option or included depending on the line |
| Hard hands | Reduces the risk of puncturing/tearing | Silicone only |
| Articulated hands with reversed thumb | Increased flexibility like a “human hand” | Available with only a few brands |
| Articulated fingers/toes | Toes mobility (either via copper wire or articulated like the hands) | Premium option |
| Standing with/without a stand | Foot fixation for standing | Standard—choose according to preference |
Quick tip: if you plan to dress/undress your doll frequently or have her take a variety of poses for your photos, go for articulated fingers and the rotating wrist. It changes absolutely everything.
✋ No compromises: Irontech and Real Lady remove vis and bulges for total realism in hands and feet. Discover the technology →
Orifices: soft, self-lubricating vagina and vaginal contraction
This is THE part everyone’s waiting for, so let’s not beat around the bush.
Soft vagina
The soft vagina follows the same principle as gel buttocks or gel thighs: a specifically worked area designed to provide sensations close to real life, with elasticity higher than the rest of the canal. For those coming from TPE: the soft vagina makes your doll enjoyable without it—but in my experience, without it you risk irritation because it’s too firm.
Self-lubricating vagina
Add a bit of water and it’s done: the self-lubricating vagina eliminates (temporarily) the need for classic lubricant. Generally count between 60 and 80 uses before needing to switch back to traditional lubricant. Available only from Bezlya or WM. An option you can really do without, in my opinion. Advice: don’t get stuck on that—finding the lubricant that suits you will be far more effective.
Motorized vaginal contraction
The vaginal contraction is a motorized function that simulates real internal pulses during use. An option found exclusively on hybrid models or sexbots. My opinion: the fewer electric functions, the better it will hold up. It’s true the option adds something, but it also weakens the doll, adds weight, and to me the game isn’t worth the candle.
Want the ultimate softness?
Discover our models with gel buttocks, gel thighs, and a soft gel belly for unrivaled touch realism.
See soft models →Robotic features and AI: welcome to the future
And that’s where things get downright futuristic. Luckily, I dug into the topic for you so you won’t get lost in the sexbot jargon.
Summary table of robotic functions
| Function | What it does, in practice |
|---|---|
| IronAI / built-in AI | Conversation module with responsive behavior integrated into the head |
| Motorized neck (fellation) | Fully automated function for fellatio, with no manual intervention |
| Motorized hips (cowgirl) | Automated hip movement to simulate a dominant position |
| Vibrating buttocks | Localized vibrations at the buttocks |
| Vibrating chest | Vibrations at the breasts |
| Robotic tongue | Motorized tongue movement for a french kiss or fellatio |
| Throat suction | Simulates suction during deep fellatio |
| Breathing system | Simulates realistic breathing, bust lifting |
| Connected head (expressions & dialogue) | Facial expressions and vocal responses via AI |
| Moans | Sounds triggered by pressure sensors or vibrations |
Important precision: these options are reserved for “Sex Bots & Robots” lines and aren’t available on all silicone dolls. We’re talking about a completely different budget and a completely different level of technology.
How moans work on an adult doll ?
“Universal” options: Elf, Pregnant, AIO, and ROS customization
Some brands offer themed variations that go beyond the classic format:
- Elf : pointed ears and stylized morphology for fantasy lovers
- Pregnant : morphology with a rounded belly, for a very specific fantasy
- AIO (All-in-one) : head and body not separable; a few rare models exist. Elsa Babe offers this option, and Piper Doll has literally made it its signature. 100% of Piper Doll models are AIO.
- Animated eyes : especially common in hentai/kawaii lines with stylized manga-like designs
How to choose your options based on your use?
I’ll summarize everything based on what you really want (literally):
- Tight budget, want to try : stick to the EVO skeleton, gel chest, and articulated fingers—the bare minimum that already changes everything.
- Amateur photographer or realistic shooting fan : go for ultra-realistic makeup (face + body), lash and hair placements—without necessarily investing in motorized functions.
- Fan of intense fellatio sensations : the ROS is non-negotiable. Don’t skimp on this— the difference with a simple articulated jaw is massive.
- Want technology and interaction : go straight to the Sex Bots & Robots with AI, moans, and automated movements.
- Search for the ultimate softness : combine gel buttocks, gel thighs, a soft belly, and a soft vagina for a touch feel as close to real life as possible.
FAQ: Options for silicone dolls
What’s the difference between ROS and an articulated jaw? An articulated jaw offers about 7 cm of oral depth, while ROS offers about 17 cm with an internal texture designed for enhanced oral realism. ROS is clearly superior in terms of sensations.
Does the self-lubricating vagina work indefinitely? No—generally count between 60 and 80 uses before needing to switch back to classic lubricant.
Are motorized functions (vaginal contraction, hips, tongue) available on all dolls? No, these functions are exclusively reserved for sexbots with internal motors—not for all silicone dolls.
Is gel chest always included by default? On the vast majority of current silicone dolls, yes. It has become a market standard, just like the EVO skeleton.
Can I add ROS after purchase? It depends on the brands and the compatible heads. Some offer a “customizable in ROS” option at the time of ordering, but it’s not available on all models. It’s always possible to buy a head separately that offers this option.
What is a connected head with expressions and dialogue? It’s a head that includes an AI capable of generating facial expressions and vocal responses, usually paired with a module like IronAI, for interaction close to a real exchange. 👉 Consult the Ultimate Ava Love Doll Guide