Aqua Scout Personal Water Filter for Camping, Hiking, Backpacking and Prepping. Portable Water filter is BPA Free and Lightweight. Water filtration straw removes 99.9% bacteria Filter to 0.01 Microns WATER PURIFICATION STRAW: Water filtration up to 1500 liters at 99.9999% of water born bacteria and 99.9% protozoa Filter to 0.01 microns CHEMICAL FREE PERSONAL WATER FILTER: Uses a hollow fiber filter strand membrane with coconut shell activated carbon for antibacterial filtration. BPA free. WATER SURVIVAL STRAW ACCESSORIES INCLUDED: Extension tube, travel strap lanyard and backwash device for easy flushing included. PERSONAL WATER FILTER PORTABLE LIGHTWEIGHT DESIGN: Perfect for hiking, hunting an ultra-lightweight camping water filter straw. 80 grams (2.821 ounces) Portable: 8.5 inch (21.59cm) Long and 1.5 inch (3.81cm) in diameter. Easy storage for emergency preparation kits. Take it anywhere personal water filter purifier. 30 DAY SATISFACTION GUARANTEE WITH OUR WATER FILTRATION STRAW: If you're not completely satisfied with the water filter within 30 days, return it for a full refund.