The large volume characteristics of fat sex dolls promote sustainable development innovation. A European brand has launched a biodegradable full body sex doll, whose corn-based silicone completely decomposes in 12 months under composting conditions. The specially designed modular structure allows partial replacement of damaged parts, extending the product life to 8 years. Carbon footprint calculations show that users who choose environmentally friendly fat sex dolls reduce carbon dioxide equivalent emissions by 83kg per year. This green consumption concept has attracted 19% of buyers to use it as their primary selection criterion, driving the industry's transformation to a circular economy.