Made in the USA, measuring 6.5 inches long and weighing only 1.6 ounces, this solid, compact, simple to use personal water filtration straw is a must on every packing list and easy to slip into any bag. It is ideal for sports like hiking, backpacking, camping, kayaking or for domestic and international travel, emergency response kits, urban survival and outdoor/wilderness survival gear. This is an essential part of any survival gear or emergency preparedness pack. The powerful advantage of the Advanced Personal Filter Straw is the use of an EPA approved Iodinated Resin to purify your water. This Proprietary Technology has been proven effective in the removal of bacteria (over 99%). This Iodinated Resin actually KILLS the Bacteria instead of just relying on filtering alone.