- What is the ankle range of motion for Standing Feet?
A: The upward movement angle of Irontechdoll Standing Feet is intentionally limited due to the skeletal design of the ankle structure. This restriction applies to all configurations (With Bolt and Without Bolt) and is not adjustable.
Key Details:
- Design Limitation:
- The ankle's upward motion constraint is inherent to the internal skeletal framework, prioritizing structural integrity over extreme flexibility.
- Configuration Comparison:
- Both With Bolt and Without Bolt configurations share the same upward angle limitation.
- The Without Bolt version is recommended for most users, as it provides a cleaner aesthetic without functional trade-offs.
- Usage Guidance:
- While the upward angle is restricted, the feet maintain full stability for standing poses.
- Avoid forcing the ankle beyond its natural range to prevent joint stress.
Note: This design ensures durability and natural weight distribution. The design prioritizes standing stability - allowing more upward ankle motion would compromise the doll's balance.
- Design Limitation:
- Irontechdoll Silicone Skin Tones Comparison
Irontechdoll offers five unique skin tones inspired by different user preferences, beauty standards, and the diverse complexions of people around the world,Natural, Glow, Tanned, Dark Tanned, and Black.

So, How to Pick The Right Tone?
Natural: A fair, similar to lighter Western complexions. A perfect match if you’re going for dolls inspired by anime characters or Western movie icons.
Glow: A warm, realistic tone that closely resembles Asian skin. Natural and lifelike, it enhances the feeling of being with a real person.
Tanned: A sun-kissed, like someone who enjoys tanning or spending time at the beach. It’s a great choice for dolls with tropical or sporty vibes.
Dark Tanned: A deeper, wheat-like skin tone that radiates health, vitality, and energy. It’s a very popular option.
Black: Designed for those who love the fuller, more athletic beauty of African or Latin-inspired dolls.
- How Are Irontechdoll ROS Head and ROS Max Head Designed?
What is the ROS MAX?
The ROS (Realistic Oral Structure) MAX is Irontech Doll’s upgraded head system designed for maximum realism and interactivity. Beyond just looking realistic, it provides a lifelike tactile experience with a fully detailed oral cavity, including teeth, tongue, and tonsils.
Which head models are currently available as ROS MAX?
The ROS MAX upgrade is currently available for the following head types:
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S13, S14, S20, S27, S30, S31, S32, S33
What are the key upgrades in the ROS MAX version?
The ROS MAX features five significant improvements over previous versions to enhance durability, realism, and usability:
1. Hyper-Realistic Oral Structure & Coloring
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Anatomy: Includes lifelike teeth, tongue, and tonsils that offer enhanced visual and tactile authenticity.
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Lip Interaction: The teeth fit naturally against the lips. The lips are designed to be slightly parted to subtly reveal the teeth (with options for tongue-out effects).
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Coloring: Features hyper-realistic gum and mouth tones in a natural flesh-pink shade for seamless blending with the skin.
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Experience: The structure is optimized for deep kissing and a more immersive experience.
2. Upgraded Adjustable Jaw
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Mechanism: Redesigned jaw joint hardware placement allows for easier oral cavity adjustment.
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Stability: The jaw opens more smoothly and stays securely in your desired position without slipping.
3. Dynamic Eye & Eyelid Mechanism
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Shape Retention: The eyes retain their shape regardless of whether the mouth is open or closed, avoiding the facial distortion common in older models.
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Expression: Allows for customizable expressions (such as an "Orgasm Face").
Note: When adjusting expressions, please do so gently using fingertips while wearing gloves to prevent damage to the silicone or makeup.
4. Lightweight Design
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Weight Reduction: The head is approximately 0.5kg lighter than previous versions, bringing the total weight to roughly 2kg.
Which Irontechdoll heads are available with ROS and ROS Max options?
ROS Max Heads: S10, S13, S14, S19, S20, S27, S30, S31, S32, S33, S40, S44, B1, B2, T1, T3, T4, R6, R7, A3, A4, A5, A6 (More are coming)
ROS Heads: S1, S17, S18, S26, S29, S37
5. Reinforced Durable Core
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Internal Structure: Features a reinforced inner frame designed for shock resistance, significantly reducing the risk of base fractures.
What other standard features come with the ROS head?
In addition to the MAX upgrades, ROS heads offer high-end customization options:
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Hair & Makeup: Options for implanted hair, eyebrows, and eyelashes, paired with refined makeup for a vivid, natural look.
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Add-ons: Optional oral suction and heating features are available to take realism to the next level.
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- How to Use Oral Sex Function (Only Available for Irontechdoll ROS Head)?
The Oral Sex Function on Irontech’s ROS Head is designed to free your hands and offer an interactive, automated experience. Follow the steps below to enjoy its intelligent response features:
- Connect the head interface.
- Long press the power button to turn on (default: Chinese Moan).
- Click to switch moan languages: English → Japanese → Korean.
- Double-click to turn off moan sounds.
- Press “M” to activate the automatic sucking function.
- Long press again to power off.
💡 Tips:
- Ensure the head is properly connected or charged before use.
- Avoid using the oral function near water or during cleaning.
- The ROS Head is built to deliver an effortless, hands-free experience, combining responsive moan sounds and suction rhythm for enhanced interaction.
- How to Use the Irontechdoll Oral Heating Function?
- Insert the Type-C power cord into the heating socket and connect it to power.
- Wait for 25–30 minutes for the temperature to rise.
- Before heating: around 27.5°C
- After heating: up to 37.5°C
- Unplug after use and let it cool naturally.
⚠️ Tips:
- Do not heat for more than 40 minutes continuously.
- Use only the official Irontech heater.
- Avoid water contact while heating.
🎥 See the demo video for detailed operation.
- How to Choose the Feet Type of Irontech Silicone Doll?
When choosing Irontechdoll, one important customization option is the feet type option. Irontechdoll offers three feet options free of charge.
Non-Standing (Soft Feet)
The feet are made from the same soft silicone as the rest of the body, providing a lifelike touch. Very soft and realistic, ideal for collectors who value natural feel. However, cannot stand at all, as there are no internal supports or reinforcements.
Standing Feet with Bolts
This option adds standing bolts under the feet to support the doll’s weight. The silicone stays as soft as the rest of the body. It’s stable for long-term standing, good for heavier dolls or frequent upright display. However, the bolts can scratch floors, damage shoes or stockings, and the silicone around them may crack over time.
Standing Feet without Bolts (Hard Feet)
This advanced design uses reinforced silicone in the feet instead of visible bolts, allowing the doll to stand naturally while keeping a realistic look. With no bolts, the feet look cleaner and more natural. Great for lighter dolls or display use. However, the feet use harder silicone, so a faint line may appear between soft and hard areas, and heavier dolls may show slight deformation after long periods of standing.
How to Choose?
For softness and realism, choose Non-Standing (Soft Feet). This option is ideal for collectors who value the doll’s natural softness and do not need it to stand upright.
For stability and long-term display, choose Standing with Bolts. This design is recommended for heavier dolls or those frequently posed in a standing position.
For natural appearance, choose Standing Feet without Bolts (Hard Feet). This option is best for lighter dolls and users who prefer a seamless, realistic look.
Important Reminder: If you choose hard feet, a seam connection line between the lower leg and the ankle is unavoidable. This line appears due to the difference in material softness (a softer leg and harder feet). If you choose soft feet or standing feet with bolts (which are also soft), this seam line will not be present.
- Soft Hand vs. Hard Hand: Which Is Right for You? — Irontechdoll Guide
Irontechdoll provides both soft and hard hand options free of charge, allowing you to customize your doll according to your personal preferences and usage needs.
Hard Hand
Hard hand uses a reinforced silicone formula that makes the hands harder and stronger. They better resist pressure and deformation, helping the hands keep their shape during regular use, posing, or light squeezing.
1. Protection for the Internal Structure
The hardened silicone layer better protects finger joints and connectors, reducing damage from force or bending.2. Improved Support and Stability
Harder silicone plus finger bones gives the hands stronger support, allowing the doll to hold its body or light props without fingers bending or breaking.3. Easier to Clean and Maintain
Hard hands are smoother and less porous, making them easier to wipe clean. Dust and dirt stick less, helping the hands stay looking new.Soft Hand
Soft hands are made from the same silicone material as the rest of the body, giving them a lifelike, delicate texture that closely mimics human skin. They are ideal for users who value realism, prefer intimate interaction, or prioritize a natural, soft touch.
Important Reminder: If you choose hard hands, a seam connection line between the forearm and the wrist is unavoidable. This line appears due to the difference in material softness (a softer arm and a harder hand). If you choose the soft hand option, this seam line will not be present.
Which Is Right for You?
Both options have their benefits, hard hands are better for durability, stability, and long-term display, while soft hands excel in realism and tactile experience. Regardless of your choice, it’s important to handle the doll gently, avoid sharp objects, and minimize excessive squeezing to extend its lifespan.
- What’s the difference between Irontechdoll Glow skin and Real Lady Silk Cream skin?
Q: What are the differences between Irontechdoll Glow and Real Lady Silk Cream skin tones?
A: These two skin tones differ in brightness, color tone, and visual texture, catering to different preferences:
Irontechdoll – GlowSkin(Left in the image) The Glow skin tone is slightly lighter with a soft, delicate glossy effect. It appears more translucent and refined, giving a clean and luminous look under light. Ideal for users who prefer a bright, fresh, and delicate appearance.

Real Lady – Silk Cream Skin (Right in the image) The Silk Cream skin tone is slightly darker, closer to natural skin color. It has a warm, soft appearance without strong reflections, emphasizing a realistic skin texture. Perfect for users who prefer a natural, life-like skin tone.

📌 Image Note: Left: Irontechdoll Glow Skin | Right: Real Lady Silk Cream Skin. Actual colors may slightly vary due to lighting and screen differences; for reference only.

- How Do You Change the Eyes on Irontechdoll Silicone Head?
To replace the eyeballs on an Irontechdoll Sex Doll with a hard silicone head, first apply a small amount of water-based lubricant to ensure a smooth and safe installation. Gently press the eyeball into the eye socket using steady pressure (toward the palm direction), then adjust the angle with a soft tool if needed. Finally, tidy the eyelashes for a natural and realistic look.
For best results, handle your Irontechdoll Sex Doll with care and avoid frequent changes, as repeated adjustments may damage the surrounding makeup or eye area.
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