1.0L Collapsible Water Filter Bottle, BPA-Free Ultralight & Durable Squeeze Bottle with 42mm Filter Cap Cartridge, Filtered Water Bottle for Camping, Hiking, Backpacking, Survival & Travel

High Efficiency Water Filtration: This water filtration system employs a high-performance 0.1-micron hollow fiber ultrafiltration membrane to effectively remove harmful, ensuring safe and clean drinking water from streams, lakes, rivers, and other natural sources.
Long-Lasting & Chemical-Free Filtration: This Burtrail collapsible water bottle is made of food-grade TPU material, the filter cartridge with a lifespan of up to 1,000 liters, this durable filter eliminates the need for purification tablets or chemicals, providing a reliable and eco-friendly hydration solution for extended adventures.
Universal Compatibility: This filter cartridge is engineered for the industry-standard 42mm opening, ensuring a perfect fit with BeFree, and other major brands. Likewise, the collapsible water bottle is compatible with any standard 42mm replacement cartridge.