Giving you a convenient way to stay hydrated and cool on hot summer runs, the Nathan ExoDraw 2.0 Insulated 18oz Water Bottle not only lets you bring along enough water for mid-to-long distance runs, but also offers insulation to keep your water as cool as you'd like in the heat. The ergonomic carrying sleeve is made with breathable and moisture-wicking materials to keep your hand comfortable as you sweat, and the adjustable strap lets your hand relax while still keeping your hold secure. Thanks to the insulated soft flask your water or electrolyte drink will stay cooler 38% longer than with a non-insulated flask, so you can make it all the way to the end without sipping on lukewarm water. Plus, it's got an expandable stash pocket to keep your key and an energy gel safely stashed and always close at hand.