Does a Sex Doll Get Looser Over Time? Internal Design, Materials, and Maintenance Explained
When shopping for a sex doll, many buyers focus on appearance, body shape, skin material, and price. But there is another important factor that product photos rarely explain: the design and long-term performance of the internal canal. How tight does…

![[Teardown & Lab Test] Oral Ergonomics and Material Density in Modern Companion Hardware](https://dollarchives.com/wp-content/uploads/2026/08/嘴巴.png)


