The insole is a premium sheepskin leather with a memory-foam cushion underneath. The knit “sock” insert adds style and comfort. The opening on the side lends visual interest and also makes it easy to put on and remove. The white sole has a dark navy layer on the bottom, which makes it a little easier to keep clean. The upper is 100% real leather, and is hand-stitched to the sole with a leather welt. These are a medium width shoe, but will stretch slightly to accommodate a wider footbed as well. If you need a half-size, consider buying the next size up.