DS is just growing out of his size 14 trainers and the next step up seems quite difficult to get. He needs comfy ones and as plain black as possible as he wears them for school. He has had Skechers before but apart from the go walk slip ons, they don't go up to a size 15. There are some on asics but they are £150 😢. No luck on Adidas. Nike are very expensive. Sports direct have some very cheap ones but they don't look great. Does anyone have any tips?