Konstantin Veltsi was born in Albania and his family moved to Athens, Greece when he was 2 years old where he is still living today. Konstantin lost his lower leg in a car accident in 2010. He is a pastry chef and a personal trainer and a professional athlete competing in long jump F44 and in 100m T44 events. His biggest successes in sports were the participation at the World Championships in Doha in 2015 after only 5-6 months of training and the participation at the Paralympic Games in Rio with the 5th place in the Greek Relay team 4x100m. He is using the Re-Flex Rotate foot for his daily life and the Flex-Foot Cheetah Xtreme for sports.