I have had acute and totally debilitating Achilles tendonitis for a year now. I am having treatment but recovery is very slow. These trainers have enabled me to continue walking and I genuinely dont know how I would have coped without them. They are quite literally the most comfortable trainer EVER. I now have them in five different colourways to match my office wear and I am one very happy lady. Thank you On, you have made walking bearable and stylish too.