Camelbak designed the Women's Spark 10 LR Pack for light and fast rides. When you're hitting the trail for less than 10 miles, you don't need 3 liters of water and 1000 cubic inches of storage. You're probably carrying a couple liters of water, an energy bar, your keys, a spare tube, a multi tool, and your MP3 player. The bare essentials, in other words. The Spark 10 is built to handle exactly that, without a bunch of extra unused space flopping around behind you. The most important design aspect of the Spark 10 LR Pack is its lumbar reservoir system, which keeps your water the majority of your pack weight in your lumbar region for comfortable, efficient carry. The women specific harness is designed for a woman's specific body type, which is typically a shorter torso and slightly different curavature of the back. The upper area of the pack carries 450 cubic inches of gear, just the right amount for an hour or two on the trail. So, for your average ride you can leave the expedition pack at home the Spark 10 is all the pack you need. Women specific harness with 3D mesh for breathability and ventilationVelvetex harness lining is ultrasoft and comfortable against the skinShorter torso length for a woman's specific body shape, also sits above jersey pocketsMultiple access points allow you to get into the pack easily to grab what you needTough, lightweight 70D and 210D nylon fabric with 1000mm water resistant polyurethane silicone treatmentNew Antidote reservoir includes a lightweight, quick seal cap, folding arms on the port to speed drying, and baffles in the body that allow the reservoir to maintain a lower profile when fullNew Quick Link system in reservoir allows you to quickly snap off the tube for cleaning and easily attach accessories like filters, flow meters, and insulated tubesHydroGuard anti microbial technology inhibits bacterial growth on reservoir and tube surfacesErgo Hydrolock shut off valve allows you to control water flow and prevents lea...