- An innovative design that integrates multiple functions. The unique three-layer structure (inner liner, vacuum layer, outer wall) provides superior insulation compared to ordinary double-walled cups. In winter, it can be temporarily used as a hand warmer after filling it with hot water, a thoughtful and practical feature. The lid is designed for sealed shaking, with a built-in mixing ball or leak-proof grid, making it ideal for mixing protein powder, milkshakes, and salad dressings. The 400ml capacity and cool all-black appearance are popular among fitness enthusiasts. It breaks the single-use limitation of water bottles, becoming a personal life assistant that combines insulation, shaking, and hand warming.
