Sex Doll Acronyms Explained: A Straightforward Guide to the Terms You Keep Seeing

Spend any time checking out sex doll shops or scrolling TDF threads? You've definitely noticed folks toss around tons of shortened terms. For newcomers, it can feel like everyone is speaking in code. Even long-time collectors admit that the list keeps growing as brands introduce new technologies, new skeletons, and more realistic materials.

To make things easier, this article provides a clear, human-friendly breakdown of the acronyms you're most likely to run into. Once you understand these, comparing dolls—and deciding what you actually want—becomes much less confusing.

The sex doll industry’s blown up so fast the past few years that folks started shortening techy descriptions just to keep conversations from getting messy. Whether you’re talking about breast gel, oral functions, skeleton systems, or channel design, these acronyms are simply shortcuts that help describe specific features without needing a whole paragraph.

1.1 Head & Oral Function Terms

ROS — Realistic Oral Simulation

This usually means the mouth has internal texture, soft detailing, and a more natural feel. Some versions have movable components or a flexible jaw — take Yeloly Olivia as an example:

AS — Auto Sucking

A built-in system that creates rhythmic suction. It's totally hands-free—usually runs on a tiny internal pump.

AIF — AI Facial Expressions

A few newer models can blink, smile a bit, or make subtle facial movements.

1.2 Internal Channel & Placement Features

LHP — Love Hole Placement

Good LHP simply means the entries are positioned in a natural, anatomically comfortable spot. View more about Yeloly Tessa.

UP — Urethra Placement

Some high-detail molds include a sculpted urethra for realism, mostly appreciated by collectors.

FSC — Full Silicone Channel

Instead of a soft TPE insert, the interior is silicone. Durable, finer detailing, and holds its shape well.

RCA — Removable Channel Accessory

A detachable insert that makes cleaning faster and less messy.

CST — Channel Stimulation Texture

Refers to the internal textures—ridges, chambers, etc.—that create varying sensations.

CCS — Channel Contraction System

A mechanical or air-based feature that simulates tightening. Considered advanced and usually found on premium models.

1.3 Breast Construction & Upper Body Details

GFB — Gel-Filled Breasts

Gel creates a soft, natural bounce and more realistic weight.

RBT — Realistic Breast Texture

This covers subtle areola detailing, tiny wrinkles, and natural shading—all the small touches that look authentic up close.

VBS — Vein-Boosted Skin

Light, almost hidden vein detailing under the silicone, making the chest look more lifelike.

1.4 Material & Surface Features

TPE — Thermoplastic Elastomer

Soft, squishy, great for those who prefer a very plush feel. Needs more maintenance because it's porous.

SVE — Silicone Vein Effect

Surface-level vein work to add a bit of depth and realism.

ARS — Anti-Stain Resistance

A treatment that helps the doll resist clothing dye transfer—very helpful if you like darker outfits.

RRS — Realistic Skin Rebound

A soft silicone feel that gently "gives" when pressed, then returns to shape—similar to natural body fat.

1.5 Skeleton, Joints, and Movement Systems

EVO Skeleton

The “standard upgrade” most brands offer now. Better posing, shrugging shoulders, more natural range. Want a doll with EVO Skeleton and standout detail? Meet Yeloly Daisy.

RJS — Reinforced Joint Structure

Designed to resist loosening over time, which photographers especially appreciate.

NPS — Neck Pose System

A more flexible neck with better tilt and rotation options.

EWS — Electric Waist System

A powered waist that can bend or move slightly on its own. Still a relatively new feature in the market.

1.6 AI & Interactive Features

VFS — Voice Feedback System

It gives voice reactions when you touch it or move it around. Some are pre-set, others run on AI. For a top-notch VFS experience, try our Vine Talk - AI Box.

SAS — Smart AI System

A more advanced system that one can actually have simple conversations with it. Think of it like a stripped-down version of a personal AI buddy.

Once you figure out what these acronyms mean, it's way easier to know exactly what you're shelling out for. You can compare dolls by their features instead of guessing from wishy-washy descriptions. It also helps you avoid overpaying for upgrades you don't need—or forgetting to add ones you would've really enjoyed.

If you're exploring realistic textures, solid internal engineering, or long-lasting materials, take a look at the silicone lineup at Yeloly. The brand focuses on detailed sculpting and durability, and their selection is ideal for anyone who values realism without unnecessary gimmicks.