The Pro-Travel Collapsible Bottle (550ml)What it is A premium, heavy duty hydration companion built for the extreme. Combining food grade silicone with stainless steel accents, this 550ml bottle is as stable as a hard shell bottle but collapses to a fraction of its size for effortless packing. Why youll love it Hot or Cold No Problem: This isn't just for water. With a massive temperature range ( 40C to 220C), you can fill it with hot tea, morning coffee or ice cold electrolytes without