What is your tea bag material made of?

Our pyramid teabags, including tag and string, are made from polylactic acid (PLA). The PLA material we use is derived from non-GMO sugar cane and does not contain any polypropylene. The tea bags are sealed using a transducer which applies pressure at an exact temperature - this cuts and seals each bag without the addition of any other materials. PLA products will generally take a number of months to degrade in a commercial composting facility. However, in a home composting facility the heat level required may not be achieved in the composting process.