RapidPure Explorer Camp 4.1-Liter Water Filtration System, 6.5-Inch, Blue Contains a 4.1 liter system and measures 6.5 inches Reduces bacteria, viruses, cysts, bad taste, odor, color, sediment, tannins Nice addition to emergency preparation equipment Great for hunting camps, camping, boats, and RV's Output is approximately 1.33 liters per minute