Carrying water through airline security... - Platypus SoftBottle With Push-Pull Cap

I USE THESE FOR AIRLINE TRAVEL,I A LOT. FILL ONE HALF FULL OF WATER AND FREEZE IT UPRIGHT. ICE IS ALLOWED. AFTER SECURITY, FILL THE EMPTY HALF WATER, AND YOU HAVE YOUR OWN SOURCE OF ICE WATER THAT WON'T SPILL DURING THE FLIGHT. I CARRY IT IN A NEOPRENE BAG WITH A BELT CLIP I PURCHASED FROM PLATYPUS.

This review was written in the old system and had content requirements that are different than reviews written today.