Lightweight, easy to use portable water filter removes harmful bacteria, protozoa, cysts, sediment, And 100% of microplastics; Perfect for outdoor adventures, travel, or emergency preparedness The Sawyer Squeeze Filter is reusable and easy to clean, lasting up to 100,000 gallons. The fiber walls inside Sawyer's hollow fiber membrane filters are thicker, making them stronger than other typical hollow fiber membrane which allows for more rigorous backwashing. The Cnoc 2 liter (64 ounce) bladder is made from extra-durable TPU with a wide mouth opening for fast, easy filling. The system weighs less than 6 ounces and includes a cleaning coupling and cleaning plunger, TPU pouch is BPA and PVC Free. 100% of squeeze units individually tested three times to performance standards by sawyer