Description Reviews Stainless Steel Straw and tea filter. Modified from a traditional South American straw called a bombilla, it's used to drink Yerba Mate. Our Mate straw is stainless steel and has a removable filter for easy cleaning. Can be used with Yerba Mate or any loose leaf tea. Comes with two 8mm straws, two filters, and 1 straw cleaner brush. 1 Review 5 Stainless Steel Mate Straw Set Posted by Carrie M. on Jun 12th 2021 These mate straws are the best! I put some tea in my mason jar, add cold water, the straw, and my Ecojarz lid, and I have cold brew tea throughout the day with no little pieces of tea ever getting through! These straws help me to get the most out of my tea since I just keep adding more water as the work day goes. They are made of strong stainless steel, are easy to clean, and work well with both the PopTop and smaller Ecojarz lids. Awesome!