FitFlop iQUSHION D-LUXE Womens Mule Slippers in Milk Ice. These slip-on slippers feature a textile upper and lining for comfort, with a durable rubber sole. Designed with a round toe shape and a flat heel height (under 2.5cm), they offer a regular width fit. The ultra-light iQushion midsole is made of high-rebound air-foam that retains its cushioning, with front-and-back impact pillows. The anatomically contoured footbed diffuses pressure and provides natural arch support. This style fits true to size and is suitable for everyday use with its grip level 1 tread.