SMARTSTANDARD German Army Military Green Personal Emergency Soldier Water Filter 99.99 Purification 1.65oz 15 Microns No Chemicals Removes 99.99% bacteria, parasites -quadruple water filtration system, this strew can eliminate particle as small as 15 microns Germany military design: 7" length and 1.65oz weight, this filter is very convenience for carrying with. Food Grade Carbon and BPA-Free High Impact Plastic Acceptable for even the harshest of conditions, access clean and safe water anywhere It will be helpful in hiking, camping, backpacking, hunting, and for those in organizations such as Boy Scouts or Red Cross. Filters up to 800 liters (211 gallons) of water and Chemical-free