Madewell Tie-Waist Maxi Slip Skirt in Blue. Coming in a lightweight and drapey fabric that moves with every step, this maxi slip skirt is cut on the bias for a perfect drape. With an adjustable tie at the elastic waist, it's a versatile number that can be dressed up or down with ease. Length: 36 1/2" (based on size 6). 60% cupro/40% viscose. Machine wash. Never worn and in excellent condition.