When you’re traveling in areas where water quality is suspect, this unique water filtration device makes life easy. It gives you a convenient and low-cost alternative to boiling, purification drops and bottled water, and is suitable for travel throughout the world. Simply place the straw into any tap, stream, river or lake – even in third world countries – and enjoy safe, clean drinking water straight away.The NDūR Survival Straw contains an advanced filter designed and tested by Seychelle Research Laboratories – one of the most sophisticated portable water purification devices in the world. Each contains an Advanced Filter that uses the advanced technology of Seychelle. It’ll do what a mere Brita cannot: it eliminates up to 99.9% of micro-organisms, up to 99.99% of all chemicals and heavy metals, and up to 99.9999% of viruses and bacteria. This straw is a must-have for hikers, campers, survivalists, and world travelers looking to stay hydrated all over the world.