In addition to being perfectly cold, water from the Thermoflask tasted pure and fresh with absolutely none of the metallic or plastic flavor transfer that can come along with some lesser bottles. The Thermoflask’s double-wall insulation did an excellent job of keeping water temperature steady over six hours, only warming 3 degrees in that time. This is a great option if you want to have an ample reserve of chilled water with you all day long. The straw lid is ideal for exercising or when you’re otherwise busy, thanks to a tiny air pressure hole that allows you to drink continuously with one hand or hands-free. We thought the chug cap was comfortable to drink from, and it provided a steady flow of water without any chance of spillage while sipping. Depending on your day-to-day needs, you can switch between two lids that come with the Thermoflask: one straw top and one chug cap that remained leak-proof after being dropped lid-down on the ground three times. No need to worry about backpack spills-we were impressed with the strong seal that prevented leaking, even when we vigorously shook the bottle. Whether you’re going to the gym or running errands, this vacuum-insulated, stainless steel bottle has a comfortable grip with a convenient handle for carrying, and it fits in a standard-sized vehicle cup holder. The Thermoflask Double Stainless Steel Insulated Water Bottle is the ideal water bottle for everyday use. This high-capacity water bottle is bigger and heavier than others we tested.

Platypus hydration system