LifeStraw is the award-winning personal water filter, designed to provide you with safe, clean drinking water in any situation. The ideal water filter for hiking & camping, travel, emergency preparedness & survival, the LifeStraw makes contaminated or suspect water safe to drink. LifeStraw does NOT use iodine or iodized resin, contains no chemicals and is BPA-free, uses no batteries and has no moving parts. Easy to clean. Can be stored and used periodically without impacting shelf life.