Niviuk Koli ProQuick and safe packing Its large diameter opening permits fast packing, collecting everything inside by means of an elastic draw cord. The bag also features adjustable compression straps with buckles. Comfort and ergonomics Size doesn't matter. Thanks to its adjustable shoulder straps and ergonomic design, theKoli Pro is as easy to carry as any other smaller backpack. Additionally, side handles mean it can be carried by several people at once.