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These American sex dolls cheap feature a multi-layered composite structure that precisely replicates the diverse mechanical properties of skin, fat, and muscle tissue, marking a significant advancement in how realism is engineered rather than merely sculpted. Instead of relying on a single homogeneous material, manufacturers have increasingly adopted layered construction methods inspired by biomedical engineering and prosthetics research. This approach acknowledges that the human body is not uniform in density or elasticity, and that true realism depends on how different tissues respond to pressure, movement, and touch in distinct ways.