EcoJarz silicone drinktop is a travel lid designed to fit mason jars with wide mouth sized mouth so you can take your hot or cold drinks with you as you go! The silicone lid is perfect for hot or cold drinks. Coffee drinkers take note, the silicone lid will not burn your lips! Replace your disposable coffee cups with a mason jar plus EcoJarz! How to use it? Just take a mason jar, and replace the wide mouth canning lid with the silicone EcoJarz lid, add a metal ring to secure it, and enjoy water, your tea, coffee, etc, without sloshing. If you are needing to cap off the jar (in order to, say, throw the whole thing in a bag), just add a canning lid under the EcoJarz lid and remove when you arrive at your destination. The EcoJarz drinktop makes a great gift for friends and family who love their mason jars, are concerned about reducing waste, and/or who love a great conversation starter. EcoJarz also works as a great next step for little folks who have graduated from their sippy cup and for those not-so-little folks who are prone to spilling while they drive or try to drink and walk at the same time.