Discontinued This Exstream XR Water Purification System is perfect for backcountry touring, international travel, paddle sports, fishing and extreme biking. The 34 oz. bottle is designed to provide a larger volume of water for when your water source may be limited. Includes one ViruStat water purification cartridge and treats 26 gallons (100 liters) per replacement cartridge (4-6 weeks when used exclusively). |