Key points: 1 Innovative ultrafiltration technology: The outdoor pump water filtration system adopts 0.01 micron medical grade hollow fiber ultrafiltration membrane to remove up to 99.99% of tiny substances, particles and sediments. Composed of high-quality coconut activated carbon fibers, it effectively removes harmful substances and odors from natural water, making it safe to drink even in the wild 2 Outdoor Equipment: Our water filtration system works without electricity, with a flow rate of up to 1400ml per minute, and the hiking water filtration pump can filter up to 3000 liters. Quickly convert rainwater, lake water, and river water into clean drinking water. It can provide delicious pure water to meet your various outdoor water needs. 3 Daily maintenance: After using for a period of time, the filter element can be opened, rinsed repeatedly with clean water to remove stains, and the filter will be restored to a new state X 6.69 inches. It can easily fit into a backpack to carry with you and keep your water on. 5 Easy to operate: Lightweight and portable, easy to use and easy to carry. Simply dip the straw in water and pull the handle up and down for clean, drinkable water. Lightweight and portable, easy to use and easy to carry. Simply dip the straw in water and pull the handle up and down for clean, drinkable water. Light and portable, easy to use and easy to carry. Simply dip the straw in water and pull the handle up and down for clean, drinkable water.