harness zorbing is not for the faint-hearted & could not be described as a gentle ride! more importantly though it'll be the most fun & biggest adrenaline rush you may ever experience.the concept is simple, two people wearing full body harnesses are attached inside the sphere, then rolled down a hill at up to 30mph. you will spend one hour at the venue, taking one fast-paced, exhilarating, & terrifying roll down the hill, fastened in just close enough to see the fear & deranged excitement in your companion's eyes. it is something that you will never forget. riding the sphere down a hill at speeds of up to 30mph is fast-paced, exhilarating, & terrifying. fastened in just close enough to see the fear & deranged excitement in your companion's eyes is something that you will never forget.