YETI Rambler Tumbler Straw Lid - Medium Authentic YETI 20 oz Tumbler Straw Lid Our wide, durable drinking straw makes this the perfect lid for margaritas, slushies, ice coffees, sweet tea, and ice-cold H20. Unlike other insulated cups with straws, the Rambler Straw Lids are built to last and have a molded-in stopper that holds your straw safely in place. And just like the other Rambler Lids, it's shatter-resistant, dishwasher safe, and completely free of BPA.