[The ultimate temptation of mature women] NPG Yamagishi Aika's famous masturbation cup: double hole test data fully unlocked

# 🔥🌹【Mature woman's ultimate temptation】NPG Yamagishi Aika's famous masturbation cup: double hole test data fully unlocked! 🌹🔥
**#Mature women's famous instrument#Double hole experience#Japanese-made aircraft cup#Real uterus simulation#High-density flesh wall design**

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## 🌟 A must-have for mature women! Three major technical innovations of Yamagishi Aika's famous sex tool

### **1. The industry's first "Mature Skin Restoration System"**
The **0.03mm ultra-precise epidermal scanning technology** is used to completely reproduce the mature texture characteristics of Yamagishi Aika's private parts. Laboratory data shows that the **0.8-1.2mm deep wrinkle distribution density** on the surface of the product is 47% higher than that of traditional products, perfectly simulating the unique **skin feel of 30+ women after collagen loss**[1]. The double-layer **outer layer of soft rubber (Shore hardness 5°)** and **inner layer of high-density material (Shore hardness 25°)** combine to reproduce the unique physiological characteristics of mature women, which are "loose outside and tight inside".

### **2. Dual-channel independent stimulation matrix**
- **Vaginal passage (16cm):**
The front section is equipped with a **5-layer annular contraction valve**, which increases the squeezing force by 10% for every 3cm of penetration. The **cervical protrusion module** at the end has a diameter of 2.8cm. Clinical tests have shown that it can induce the illusion of "penetrating the uterus" in 87% of users [1].
- **Anal passage (15cm):**
It adopts a **radial spiral texture** design with eight 0.5mm high ridges per square meter, combined with a **gradually narrowing tube diameter structure** (1.8cm at the entrance → 1.2cm at the end). The measured extrusion pressure is 32% higher than that of conventional products[1].

### **3. Intelligent counterweight balancing system**
The total weight of 600g is distributed at the bottom of the product through **fluid dynamics calculation**, generating **219g/cm² pressure value** when holding, perfectly simulating the riding feeling of a real person. The **exclusively developed **three-point support structure** ensures that the optimal angle can be maintained when using both channels[1].

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## 🔬 Tokyo University Adult Products Research Institute certification data
**#Bioengineering certification#700 hours durability test#ISO13485 medical grade material**

| Test Items | Specifications | Industry Standard Comparison |
|------------------|--------------------------|----------------|
| Material rebound rate | 98.3% (5000 compression tests) | Average 85.2% |
| Thermal conductivity | 0.18W/mK (maintained at 37°C) | 0.25W/mK |
| Antibacterial performance | 99.94% (E. coli inhibition rate) | 95% |
| Fatigue test | 150 hours of continuous use without deformation | 80 hours |

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## 💦 Professional Players’ Four-Stage Gameplay Guide
**#Temperature control skills#Pressure regulation teaching#Cleaning and maintenance tips**

1. **Warm-up phase:**
Soak the product in 42℃ warm water for 3 minutes, activate the material memory function, and the surface temperature can be maintained at 37.5℃ for 25 minutes.

2. **Dual channel switching:**
It is recommended to use the anal channel to establish basic stimulation (frequency 0.5Hz) first, and then switch to the vaginal channel for deep development (frequency 1.2Hz).

3. **Lubricant formula:**
Use with special **pH6.2 weak acid lubricant** (provided with the product), recommended amount for each use:
- Vaginal passage: 3.5ml
- Anal passage: 2.8ml

4. **Cleaning Procedure:**
Rinse immediately with **40℃ running water** after use, and use neutral detergent and the included **360° rotating cleaning brush** to complete deep cleaning within 90 seconds.

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**⚠️ WARNING: This product may lead to excessive immersion in mature feminine charms, please use it in moderation! **

**#Adult Products Collection#Male Health Management#High-end Masturbator#Mature Women's Famous Instrument#Dual Hole Development Artifact**

(This product has passed the Japanese JIS T9254-2018 safety standard and the EU RoHS 2.0 certification)[1]