Steripen Nalgene Pre-Filter for Wide Mouth Bottles

The Steripen Nalgene Pre-Filter is an essential tool for ensuring safe drinking water when clear sources are unavailable. Designed specifically for wide mouth Nalgene bottles, this pre-filter effectively strains out particulates, preparing the water for further purification with your Steripen device.

• Threads securely onto wide mouth Nalgene bottles
• Protects bottle threads from contaminated exposure
• Acts as a fine pre-filter to remove sediment