• Easy to use: can be used directly in rivers, streams, and lakes, or connected to a water bag, bottle, and tubes to obtain clean water. • Lightweight and portable: weighs only 69 grams and measures 20 cm in length by 3 cm in diameter. Includes a metal buckle and a cord for easy transport during travel or outdoor activities. • Effective purification: removes bacteria and parasites from water, and reduces turbidity. • Advanced and safe technology: removes 99.99% of tiny material, cysts, particles, and sediments thanks to its 0.01-micron ultrafiltration membrane. Provides up to 1500 liters of drinking water. • Multifunctional filter: compact and lightweight filtration system, without the use of iodine, chlorine, or other chemicals. Ideal for outdoor adventures, emergency preparedness, camping, hiking, and backpacking.