Hydration pack Compañero 2, with 2 litre Source hydration reservoir

This compact rucksack has just about every feature you could want:

• Layered insulated main pocket keeps cold liquids really cold
• Zip pullers on the main pocket have snap fasteners so they stay done up
• Extra external zip pocket with karabiner clip for keys, etc.
• Reflective strips on both sides improve strap visibility in the dark
  
• Two mesh pockets at the sides give you fast access to energy bars, etc.
  
• Mesh shoulder straps and AirStripes back system provide all-round ventilation: anatomically shaped shoulder straps guarantee comfort and unrestricted movement. Adjustable height chest strap ensures the shoulder straps are an optimum fit. Special design allows maximum free movement of the ribcage while the strap remains securely fastened. Bilaminate composition of the back “plate” with firm and soft layers of foam gives optimum load distribution with a high level of comfort.
  
• And not least, a fully detachable waist strap