I use one on my bicycle...I freeze some water in the bag and then fill with water before leaving...blow water back into the unit when done drinking so the water stays cold...ready for next sip!
I use one on my bicycle...I freeze some water in the bag and then fill with water before leaving...blow water back into the unit when done drinking so the water stays cold...ready for next sip!
" Truth is often deemed rude, blunt and to the point which is why so few make their friend " Freddy Hayler ..352-267-1553 Sanford, FLA Gutterman6000@Gmail.com