Bosaco Womens Comfort Slip On House Leather Slippers Shoes Leather Made of Genuine Leather Outer and Inner sections of the slipper They adjust to the shape of feet very well and being an open toe design help with ventilation and flow of air. On top of that the internal inlay of the upper section of the product is made of natural leather to prevent sweating. The main ingredients making this item are leather and EVA sole (ethylene vinyl acetate). The sole is covered with the soft fabric to add comfort. The leather is stitched into the sole cork on the edges giving it durability and stability.