Q Knot is the optimised version of a rubber band. It can be used to bundle objects such as cables or pens and is reusable many times. The end of the strap needs to be pulled through the eyelet until the bundled objects are tightly fixed. The practical self-locking mechanism guarantees that the band does not untie again. The product is made of a stretchable synthetic material and seals plastic bags as good as bag clips.