Brewista Cold Pro Smart Brew PLA - 50 Filter Brewista Essentials paper filters have always been 100% compostable and made from responsibly harvested sources. Our new Smart Brew™ PLA filters take it a step further and contain absolutely no wood-producing plant content! The lightweight, fine-filament material is made from polylactic acid (PLA), a biopolymer derived completely from the sugars extracted from annually grown plants such as corn. Brewista® Cold Pro™ PLA Filters are NSF Certified.Brewista® Smart Brew™ PLA Filters are made to fit our Cold Pro™ 2 and Cold Pro™ 4 Brewing Systems. Filters come folded in a pack of 50. 100% annually renewable materials. No wood-producing plant content. Spun-bond web biopolymer PLA. Designed to fit most popular cold brew coffee systems including: Brewista® Cold Pro™, Cold Pro 2™, and Cold Pro 4™. Toddy® Cold Brew System - Commercial Model*. Filtron Pro®**. Neutral odor and taste. Manufactured in a certified cleanroom using Best Food Safety Practices. Outstanding, consistent flow through. Silky textile-like feel.