Purewell Replaceable Pre-Filter for Portable Filtered Water Purifier – Emergency Water Filter Pump with 4-Stage Integrated Filter for Camping Hiking Backpacking …
Product Features Newest 4-level Water Filter Bottle – 0.01 Micron Ultrafiltration Membrane could help you effectively filter water (The diameter is one ten thousandth of the hair), anything larger than 0.01 microns in diameter cannot pass, activated carbon filter reduces odor, improve taste. Replaceable pre-filter – Coconut Shell Activated Carbon and Medical Grade PP Carton