For 16oz Glass Cups: These bamboo lid measures 70 x 55 mm in outer diameter and inner diameter, can work with 16oz 20oz glass cups, beer can glass and most of regular mouth mason jars and tumblers, Ball or Kerr. Diameter of straw hole measures 14 mm/ 0.55 inch, wide enough for bamboo straws.

【Not Easy to Mold】Bamboo lids with straw hole are made of 100% natural bamboo, which is biodegradable and safe to use, not easy to deform. Never worry about mold.

【Leak proof】 Bamboo lids for beer can glass are equipped with silicone sealing rings, providing exceptional sealing performance. The accurate size and high-quality silicone ring ensure that the lid stays perfectly at the bottle mouth and will not loosen. Don't worry about the liquid flowing out of the bottle. The lid has beautiful textures and a unique design. When the beer glass is covered with this lid, this ordinary beer glass will dazzle your eyes and definitely embellish your party scene.

【Reusable and Durable】Don't worry about rusting or deformation. Very easy to clean. The silicone ring can be easily removed. The silicone in the hole can keep the straw from moving around.