Whether you're Trail Running, Cycling, or chasing Squirrels at the park the Kompressor Speed pack has what you need and nothing you don't. With it Durable Nylon Ripstop construction, you'll need stitches before your pack does. Featuring a 500mL Flask and 2L Hydropak Reservoir, staying hydrated is the last thing you'll need to worry about. It's Highly compressable, has a Mesh Pocket for Food Gels, Internal Organizer with Kep Clip, Front Verticle Zip Pocket and reinforced Reflective Clipping Point to keep you visable. Durability without the weight.