Silica gel cup mouth: not easy to bite 2. Ring cup mouth: when drinking water, the mouth is placed in any part to suck, the leak-proof valve opens automatically, the water flows smoothly, closes itself when not drinking, the water no longer flows out, the baby learns to drink water from here. 3. Environmental protection PP, rest assured sucking: high-density, non-side chain P material, is widely used in baby cups, heat-resistant area in - 20 ~ 110 degree C, can be recycled.
