The ballet flat with more pump less thump. They're soft, stretchy, sporty-looking, fun, feather-light, unbeatably comfortable (obviously) and they breathe. - On FitFlop?? ergonomic, ultra-comfortable Anatomicush?? midsole technology - Average to wide fit - APMA* seal of acceptance, for footwear found to promote good foot health - Ergonomically engineered for world-class comfort - Ultra-light, stretchy, breathable, single-piece nylon mix knit uppers - With elasticated collar for easy on and off - Lightweight, flexible anatomical cushioned sole with hardwearing rubber pods - Tested for slip-resistance To keep your ??erknit shoes clean, use a cloth to (very) gently dab dirty areas with cold water and mild soap, then simply let them air dry.