Water-to-Go 50cL Water Purification Filter Bottles - Removes Bacteria & Viruses! Color:Blue A comfortable technical closed cell

A comfortable technical closed cell foam pad in the quick and easy to fold accordion style

Not everyone needs or prefers mid-height hikers

stretch drawcord for adjustability

Anatomic Decoupling technology lets the PREDICT flex with your foot

Water-to-Go 50cL Water Purification Filter Bottles - Removes Bacteria & Viruses! Color:Blue A comfortable technical closed cellWater to Go's Unique 3 in 1 filter has been created based on technology originally developed for the NASA space programme. The filter works instantly to protect against bacteria, parasites and microplastics reduces chemicals like chlorine and improves water taste. The three technologies used in a Water to Go filter are: 1. Mechanical filtration; a very small pore size which stops contaminants passing through. 2. Electrical (by a positive charge) which