Rainer began his wrap career in 2003 and quickly became one of the elite wrappers in Germany. He worked closely as a trainer and presenter for Avery Dennison Europe from 2014 to 2020. In 2020, Rainer became part owner of The Wrap Institute and leads the training and production team at the TWI Center in Munich. Rainer is widely regarded as one of the foremost experts on PPF. In addition, he is known for his innovation and has made many of the top selling tools at Yellotools.