Purewell Outdoor Water Filter – 0.01 μm ultra-fine filter removes 99.99% of bacteria & heavy metals | 1500L filter capacity | Portable drinking water filter with Carabiner for survival & outdoorFresh Water Instantly: Purewell Filter Straws are a camping gear and equipment for emergency situations. It's necessary when camping, hiking, mountain climbing, hunting, trekking, backpacking, biking, boating, car rides, outdoor trips and wilderness adventures. Your kit can never be too prepared. Easy To Use: Get down close to the stream or lake and use it to drink straight from the source, or fill your water bottle and insert the filter to start