The 'Release and Run' is similar to Rollo. The difference is that the collar is made of different, softer material, that probably is more comforable for the dog. Also the leash has to be pulled out more sideways, not perpendicularry to the back of the dog's back. So in this way it is easier to find a way that the dog can reach it himself.
The challenge with this type of collar is again not 'how can the leash be (de)attached to the collar by the dog?', but 'how will the dog put on/off the collar all by himself?'
As mentioned in the explanation, the new element of pulling the leash out sideways, is interessesting for our own collar/leash design.
Release and Run