Tips - Fill up the bottle with water, sip the straw 8 to 10 times, then you will get fresh water (It requires more suction than ordinary bottles to suck water out, because the water needs to be filtered through 4 layers). When in use, do not block the silicone hole next to the straw because air pressure is indispensable if you want to suck the water out. But when not in use, it is best to press the adjustable straw back and press it tight, otherwise water will leak out through the silicone hole. Long Lifespan - The filter element can filter up to 1,500L (396 Gallons) drinking water and can replace 3,000 single-use plastic bottles (500ml). Proper use and maintenance of the water filter can prolong its service life. But for optimum performance, the filter element should be replaced every 3 months. Built-in Compass - When you are camping or exploring outdoors, the built-in compass at the top of the water bottle can help you identify the direction. Smaller Filter Pore Size - The filter pore size of the hollow fiber UF membrane is 0.01 microns so that it can filter out 99.99% harmful materials from the water while other brands' filter pore size is only 0.2 microns. The smaller filter pore size, the higher filtering accuracy. 4-Stage Filtration - The Survimate water filter bottle adopts a composite filter technology, can reduce most contaminants. The filter element uses a coarse filter screen, a 0.01µm hollow fiber UF membrane, a sediment PP membrane and an activated carbon fiber to reduce chlorine, bad odor and intercept heavy metals, sediment, soil, organic matter and other impurities, etc.

Item Weight: 0.42 Pounds. Purification Method: Ultra Filtration. Included Components: Water bottle, filter. Capacity: 650 Milliliters. Material: Polypropylene. Color: Purple. Brand: SurviMate. Date First Available: June 11, 2019. Best Sellers Rank: #2,758 in Sports & Outdoors. Customer Reviews: 4.4 out of 5 stars 2,207 ratings 4.4 out of 5 stars. : B07RYVWM8F. Sport Type: ?hiking. Size: ?22 oz. Included Components: ?Water bottle, filter. Style: ?22oz. Part Number: ?BLWF. Manufacturer: ?SurviMate. Number of Items: ?1. Material: ?Polypropylene. Color: ?Purple. Brand Name: ?SurviMate. Item Weight: ?0.42 Pounds. Package Weight: ?0.27 Kilograms. Item Package Dimensions L x W x H: ?9.65 x 3.31 x 3.11 inches.