Made of high-quality environmentally friendly non-toxic PP material, not easy to break, durable and long service life.The diameter of the telescopic cup is about 2.95 inches, the opening height is about 3.15 inches, and the closing height is about 1.38 inches.widely used in home and outdoor, camping, hiking, travel, sports events and concerts, very suitable for hot and cold drinks, portable space-saving cups, heat-resistant, reusable and flexible, can be placed in the dishwasher and The freezer is absolutely safe.Beautifully designed and minimalist, these reusable telescopic cups with lid stand out because of one of their key functions: they can be folded in a bag when not in use. After fully unfolding, the cup is sturdy and durable. The reusable.