Key Features

• 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.
• Fast Flow Rate & Easy Maintenance: High-capacity 1.0L (35oz) squeeze water bottle with quick-flow filter delivering clean water in seconds. Simply shake & swish with clean water to maintain optimal performance, ensuring hassle-free use on the go.
• Ultralight & Ambidextrous Design: The water bottle with filter weighing only 82 grams, the flask features a versatile dual-handle grip for easy carrying from any angle. It packs down small and is crowned with our leak-proof twist-to-drink cap, making it the perfect companion for backpacking, hiking, and travel.
• Twist-to-Drink Cap: Drink directly from the twist-top cap for instant hydration. Then, simply twist it closed to activate the leakproof seal, which prevents spills and makes effortless hydration possible anywhere.

Specifications