The Flying Cup (飛機杯) is designed with a focus on comfort and usability. Its internal structure often uses soft materials to simulate natural texture sensations in a non-medical, wellness-oriented context. According to Comepolsory insights, product development in this category is heavily centered on user experience. Key improvements include adjustable tightness, breathable materi... https://www.suntoy.com.hk/飛機杯/