Designed to remove debris from water, the Pre-Filter enables UV light to effectively destroy any microorganisms so that you can drink confidently knowing that your water is as pure as can be.

• 40 micro durable nylon screen
• Reversible cartridge for compact convenient storage
• Dual water seals prevent drinking surface contamination
• 1.5 oz. total weight
• Compatible with most 32 oz. wide mouth water bottles