Overview: The silicone vent valve is easy to use when you open the vent valve and then open the cover. Integrated silicone ring inside the dust cover has a tight seal, no side leakage Round cup mouth design Thickened round cup mouth fits lip-shaped drinking water for more comfort. Specification: Name: Portable wheat cup Specification: bottom diameter 6.91/7.98*11.37 (300ml) Material: wheat straw+pp, handle and breathable plug are silicone color: Nordic blue, Nordic flour, Nordic rice Package Content: 1 x Cup 、