Sex Doll Breast Types Explained in One Short Guide

Sex dolls typically use three types of breast structures: solid, hollow, and gel-filled. Each option changes the weight, softness, and realism of the doll.

1. Solid Breasts

Made entirely from silicone or TPE.

• Firm and durable
• Hold their shape well
• Best for A–B cup dolls or small-chest body types, because solid construction is very firm and becomes heavy when scaled to larger sizes

2.Hollow Breasts

Built with an internal cavity.

• Much softer than solid breasts
• Reduce overall doll weight
• Suitable for medium and large busts, especially body types where softness and lighter handling are important
• Often used on fuller-chested dolls because the hollow interior prevents excessive weight accumulation

3.Gel Breasts

Filled with a soft gel that mimics human fat.

• Most natural softness and rebound
• Maintain shape under pressure
• A lighter option for large-bust dolls compared with solid breasts, while offering more realism than hollow designs
• Usually a paid upgrade on most brands
• Ideal for large-bust, curvy, or BBW sex dolls where realistic movement and touch are priorities

This simple comparison helps users understand how breast structure affects realism, touch, and handling.