Dimensions: 19" x 15" x 2.43". Pack size: 4.7" x 4.7" x 1.2". Includes (2) RapidUV reserviors with caps and one liter collapsible measuring cup. Four liter capacity. Proprietary system that uses SteriPEN Quantum UV water purifier with RapidUV reservoir to speed up purification rates. Rate is four liters in 2.5 minutes. Compatible with SteriPEN Quantum UV purifier, FitsAll filter, and most wide mouth accessories. Boxed with hanging tab.