The allsafe dog safety harness protects you and your dog in the event of an accident offering optimal safety levels the technically rigorous design was developed with the help of vets and has been collision tested with a dog dummy at speeds of approximately 30 mph and is also certified to resist pressure of up to a ton the allsafe dog safety harness has four different buckles in order to ensure the perfect fit for your dog the wide breast plate and soft padding guarantees comfort and helps