"Hydration that keeps up with you! Your Nathan SpeedDraw 2.0 Insulated 18 ounce is back with upgraded materials for effortless squeezing and rebound, this bottle is designed for smooth and steady flow. A handy zipper pocket stashes your valuables while you stay focused on the trail. The fully-adjustable hand strap and chafe-free thumb hole make grip-free running effortless as a Sunday morning. And the Push-Pull Blast Valve™ - It delivers bursts of replenishment faster than you can say ""next mile!""."