Unused Product: Bamboo Double Wall Cup 350ml Notes: An environmentally friendly tumbler made by mixing bamboo fibers with resin. It reduces the use of plastic. Materials: Polypropylene, Bamboo fiber (20%), Silicone Capacity: Approximately 350ml Structure: Double-walled construction, making it less prone to condensation and providing insulation for both hot and cold beverages. Eco-friendly: A sustainable product that reduces the use of petroleum-based plastics. Heat resistance: 100℃