Corrosion Resistant Manual Special Valve Runner System Accuracy: 87 %

Special valve system creates the best pressure balance and maintains temperature consistency by using a large thermostatic valve and smaller valves to create the ideal airflow.This product has a special valve system that comes in two colors: blue and red. It is made from natural materials. This model weighs less than 18 oz, making it perfect for the gym, camping, biking, or anywhere else you want to drink water. It is carry-on compliant, but you cannot refill it on planes. Our special-valve system quickly releases air, so when you unzip your bag, it collapses to a fraction of its original height. This means storing your packing cubes takes up much less space in your closet, or drawers at home.