Ultimate Direction designed its Jurek Endure Lumbar Pack in collaboration with ultramarathoner Scott Jurek to give you a comfortable pack that holds all the essentials for longer runs. Its Mono Hex mesh and Power Stretch mesh provide ample amounts of breathability and mobility to keep you cool and comfortable, and Velvetex edges keep everything together for a long time without adding weight. The silnylon straps are so soft and lightweight that you'll barely notice the pack while you run. The Jurek Endure also features two bottle holsters with 10 ounce bottles so you can run with 20 ounces of water equally distributed around your body. Ultimate Direction made these bottles out of BPA free polyethylene and equipped them with leakproof caps for your convenience. You can replace one of the bottles with a camera to snap your short adventures in the mountains. The accessory pocket stores snacks and a packable wind jacket, and the sliding race bib clips hold your numbers.