About this item

• 【Connect with Filter straw】 Compatible with LifeStraw, Membrane, and other common brands Filter Straw Filtration System. Make your filter straw into an outdoor water purifier.
• 【Ultra Safe Material】: The gravity-fed water bag is made of food-grade, BPA-free, ultra-safe, and ultra-durable material to ensure safe and water all the time
• What's in box: 3L water bagx1, Adjustable Tree Strap, Detachable Tube, 28mm adapter
• Only the gravity fed water bag, NO filter straws included. Buy your favorite filter straws separately.