Glass Can Bamboo Lid -Straw holes are approximately 15mm/0.59 in diameter -These bamboo lids contain detachable silicone ring -They can work with 58 - 68mm diameter glass mouths -Straw holes are approximately 15mm/0.59 in diameter -Mason jar lids with straw hole are made by 100% naturally bamboo material, which is biodegradable and safe to use, not easy to deform or break. 1. clean lids after using 2. do not use water above 85° 3. do not store any liquid in the mason jar when not in use 4. not suitable for preserving or water immersion