Lightweight, compact purifier with newly designed even better features including a cleanout port and updated direct connect for popular trail containers, double-action field serviceable pump with no hold time, sealed canister with cover, tote bag, gravity feed and the tried and trusted award-winning "Structured Matrix" chemical-free purification technology. Fast Flow Rate, More Durable, An environmentally friendly product, Independently certified to EPA Guide Standard Protocol for microbiological purifiers against bacteria, cysts and viruses, Increased durability and capacity for more savings.