Material: Made of polyester, durable and can be used repeatedly. 3 Sizes Available: 26, 18, and 16 inches, suitable for both large and small brews. Drawstring Design: Easy to close and prevents pulp from spilling out during fermentation. Quickly Filter Out Residue: It can be used by both novices and veterans, and it is easy to use. search:cold brew bags,cold brew filter bags,cold brew pouches,Straining Bag