The Aetrex Julia Comfort Mary Jane Footwear is designed to meet the demands of both fashion and function. This black Mary Jane is made of luxuriously soft full grain leather and incorporates linings made with moisture transferring polyester fabric for maximum comfort and breathability. The Julia also features 1/4" removable depth in two layers - a patented Aetrex Performance Insole and Aetrex's innovative PRST for customization and fitting flexibility.