When choosing materials for a custom sex doll, durability is a key factor to ensure longevity and realistic feel. Silicone is widely regarded as one of the most durable and realistic options due to its resistance to tears, stains, and deformation. It retains its shape over time and can withstand regular use with proper care. Thermoplastic Elastomer (TPE) is another popular material known for its softness and flexibility, offering a realistic skin feel. Although TPE is more porous than silicone, making it slightly more susceptible to staining and odor absorption, it is also highly durable when maintained properly. Some high-end dolls incorporate hybrid materials, combining silicone’s durability with TPE’s softness to optimize both qualities. Additionally, the internal skeleton or frame should be made from strong, lightweight metals like aluminum or steel to support the doll’s structure and movement without compromising stability. Ultimately, the best choice depends on your preferences for realism, maintenance, and budget. Well-made silicone or TPE dolls, combined with a sturdy internal frame, provide a balance of durability, flexibility, and realism, ensuring your investment lasts for years.