Vaude, a German company known for its backpacks, will soon release a new hydration pack, called the Tracer. The Vaude Tracer Hydration Pack features a novel Ergo vent suspension system, adjustable hip belt for fitting, two air permeable foam elements that benefits ventilation.
In total, you can pick from four different sizes of the Vaude Tracer hydration pack, starting at 12 liters and up to 28. Your choice is clearly upon what your carrying. Underneath the pack is storage meant to hold tools with a built in organizer, separate area for the hydration system, area to attach a helemt to the front, and a integrated rain cover.