This water filter straw works well in removing the bacteria in the water to provide c-lean and safe water for you. Be suitable for outdoor activities, like camping, hiking, backpacking, cycling etc. What are you waiting for? Just come and buy. Features: Lightweight and practical water filter system. Removes waterborne bacteria and parasites, and reduces turbidity. Purify up to 2,000 liters of water, down to 0.01 microns, it satisfies your daily needs. Ergonomic suction h-ead, multiple ultrafiltration film design, offers you c-lean water. Bottom thread design, you can connect it to kettle directly. Durable ABS & P-P material ensures long service life. Equip-ped with 1 * extendable straw & 1 * sling, convenient to use and easy to carry. Perfect for outdoor activities, like camping, hiking, backpacking, cycling etc. Specifications: Color: Cyan/ Army Green/ S-ky Blue (optional) Material: ABS + P-P Extendable straw: 180mm Dimension: 180 * 23mm / 7.1 * 0.9inches (Length * Width) Package Size: 200 * 50 * 28mm / 7.9 * 2 * 1.1inches (Length * Width * Height) Package Weight: 70g / 2.5ounces Notes:    1. Don't take the first sip of water.     2. Do not collect saline and chemically contaminated water.     3. Do not put it into microwave oven.        Packaging List:   1* Water Filter Straw 1* Sling 1 * Straw