Membrane Solutions Water Filter Straw Camo. 9999percent bacteria and 99.99percent protozoan cysts. Remove particles as small as 0.1 micron. BPA free materials. Cord lanyard. Specifications for Membrane Solutions Camo Water Filter Straw: Manufacturer: Membrane Solutions Color: Camo Package Contents: Membrane Solutions Camo Water Filter Straw Membrane Solutions OESF001: Water Filter Straw Camo