HPL SeriesLAB TEST:

Nathan's Human Propulsion Laboratories (HPL) conduct brutal product experiments with the help of dozens of top-level athletes. These HPL Experiments may be shooting for a world record or a new personal record - or perhaps a less tangible goal, like putting on an ultra or introducing ten road runners to the trails. Like all experiments, their progress toward achieving these goals with the help of Nathan products is tracked, studied, and reported. The Nathan HPL Series includes the products inspired by and named for their respective athletes.

The Wasatch 100 is one of the world's toughest hundred-mile trail runs. A lot of runners dream of finishing it "just once." Nathan's product testing critic, Dana "Mud n' Guts" Miller is shooting for 20 finishes. With 16 behind him, including 5 victories, he's discovered that a lightweight hydration vest can cut down on the nausea sometimes caused by a waist pack. The HPL #020 was designed to help Mud n' Guts survive another four Wasatch 100s. He suggests you use it on your next hundred-miler, whether it's your first or your 25th.

• 3-way Propulsion Harness
• 2 litre hydration bladder with filter-compatible screw-top closure and bite valve
• Twin front holsters for carbo-gel and/or GPS
• Two zippered rear compartments
• Zippered front pocket
• Lightweight, breathable Wall Mesh with soft perimeter binding
• Weight: 6 oz.