Miu Miu and New Balance are keeping this flat-soled train moving right along with new 530 SL sneakers.Miu Miu and New Balance turn up the brightness on their 530 SL collab, introducing the super-flat sneakers in fresh colorways. Shop New Balance 530 Miu Miu and New Balance are fresh off their mule-fied 530 sneakers, which are quite literally the OG 530 SL collaboration gone sneaker-slip-on mashup (literally same colorways and all).