The Osprey Men's Katari 3 Hydration Pack is low profile but high quality, you'll reach for this pack before your next quick pedal and hardly notice it's there. Enjoy the airmesh-covered backpanel and rolled soft-edge shoulders deliver excellent ventilation, comfort, and stability, while allowing for full range of motion. A dedicated external sleeve holds an included 2.5-liter reservoir and stretch mesh side pockets let you grab bars, gloves, and other small essentials on the go. Clip your taillight on the bottom loop to quell any concerns about making it out of the trail before the sun makes its way to the horizon. When you want to carry water on your back, and almost nothing else, the Osprey Men's Katari 3 Hydration Pack has you covered.