A Collapsible Water Filter that can filter 99.9999% of bacteria AND viruses.\nPure Clear says:\n Tired of carrying around your water bottle when it is empty or having to squeeze it back into your bag when there is no more room? Pure Clear Collapsible Squeeze Water Filter Bottle with advanced electro-adsorptive technology is the answer. The compact filtration device is durable enough to match your adventures wherever you go, without having to worry about damage such as punctures, tears and rips. The new lid cap is designed to be leak proof and the bottle has a transparent grey body colour finish, so you can monitor your fluid levels whenever required, enabling you to plan your route accordingly via the next water source. Our advanced new condensed filter located within the Collapsible Squeeze gives you a filtration performance you can rely upon, enabling you to relax and enjoy the atmosphere.\n\nOur Verdict\nI admit I had to do a double-take when I got my hands on the 500ml version of this filter; I had to ask my boss if I had this right, a collapsible water filter that can filter viruses. This product is potentially game-changing. Its also incredibly reasonably priced, half that of most other brands.\nFilling the water bottle is simple, thanks to the large 42mm mouth, then simply attach the filter and drink straight from the water bottle. The malleable bottle easily squeezes into a side packet and, when not in use, packs down incredibly small. \nThe 42mm thread will fit on the CNOC bladers and bottles, so you can process more than the 1000ml capacity of the Pure Clear water bottle if you wish.\nPure Clear suggests changing the filter every two months or 200L of water. Replacing the filter is incredibly easy, and each filter is reasonably priced. You do not back flush the filter! This may mean, on longer trips, you may have to carry an additional filter, which some people will be put off by.\n- Reviewed by Ultralight Outdoor Gear\nIn-depth Reviews:\n\nPure Clear Collapsible Squeeze Water Filter Bottle Review – \

A Collapsible Water Filter that can filter 99.9999% of bacteria AND viruses.Pure Clear says: Tired of carrying around your water bottle when it is empty or having to squeeze it back into your bag when there is no