Membrane Solutions®

Compatible with Various Filter Straws - This collapsible water bottle can easily fill lakes, rivers, ponds, snow water, stream, and municipal water sources.

Collapsible - The 23oz (650ml) soft water bottle is collapsible, the volume of the water bottle is reduced by 50% when folded, leaving only 5.3 inches (height)._

Portable & Leak-Proof: The unique push-pull design of our flexible water bottle is perfect for reducing spillages and water accidents.

Self-Standing Base & Measurement Scale - Stands upright when full and has measurements on the side to see how much water is in the bottle._