From the manufacturer

For those who value space without sacrificing performance, the BeFree AC 0.5L water filter is the ultimate solution. Whether you're running, biking, or simply out for the day, it fits in your smallest pocket, running vest, or jacket — making it your go-to option for clean water on the move. 

Features

• The 2-stage filter delivers clean and great-tasting water wherever your adventures take you. 
• Fast flow rate of up to 2 liters per minute
• The integrated rugged handle makes it very easy to hang your BeFree AC from your backpack with a carabiner or a rope, or take it out easily from your pocket while you run — or, just carry it by hand. 
• With the robust flip cap, you can trust that not a drop is spilled, no matter how tough the journey. 
• Proven BeFree EZ-Clean Membrane™ revolutionizes water filtration for outdoor enthusiasts. This innovative technology allows for quick and effortless cleaning of the filter without any additional tools. Simply shake or swish the filter in water to remove debris and maintain optimal performance. 

Specifications

• Group Size: 1
• Usage: Often
• Output (L/min): 2
• Effective against: Chemicals, bacteria, protozoa, cysts, sediments, bad taste, microorganisms, microplastics
• Technology: Microfilter
• Filter material: hollow fiber, activated carbon
• Capacity: Hollow fiber filter goes up to 1000 liters depending on water quality
• Field cleanable: Yes
• Dimensions: 85 x 54 x 273mm
• Weight: 72 g