The materials used in real-feel interactive sex dolls significantly influence their realism, durability, and maintenance. The two primary materials are silicone and thermoplastic elastomer (TPE), each offering unique advantages.

Silicone is renowned for its durability and high-end feel. It is non-porous, making it resistant to stains and easier to clean, which enhances hygiene. Silicone also maintains its shape over time and is less prone to tearing. Its firm yet flexible texture closely mimics human skin, providing a realistic touch. However, silicone tends to be more rigid than TPE, which might reduce some aspects of softness and flexibility.

TPE, on the other hand, is prized for its ultra-soft, lifelike qualities. Its porous nature allows for a more supple and malleable feel, making it highly realistic to the touch. TPE dolls are generally lighter and more affordable than silicone ones. The main drawback is that TPE is porous, which can harbor bacteria if not properly cleaned, requiring diligent maintenance. It is also more prone to tearing or damage if handled roughly, so careful use is essential.

Both materials can be enhanced with internal structures and heating elements to boost realism. The choice between silicone and TPE depends on individual preferences for texture, maintenance willingness, and budget. Understanding these differences helps users select a doll that best aligns with their expectations for realism, durability, and care.