Reformation NWT 7 Waldena Blue Mist Satin Block Heel Mule Scallop-Trimmed. The Reformation Waldena Block Heeled Mule is a mule sandal with a block heel, peep toe, and shell design at the upper. New with tags! No box. The details This is a double satin fabric made from 88% NAIA Renew Acetate and 12% Polyester. Spot clean. Fits true to size, order your normal size Almond toe Slip on 1.96" heel Leather upper, lining and sole Made in Brazil Step into elegance with these chic blue slides. Featuring a unique scallop-trim design, these shoes offer both style and comfort. Perfect for any occasion.