Muk Luks Womens Adjustable Open Toe Slipper Polyester Rubber sole Adjustable Foot - The adjustable nature of these slippers makes them ideal for all manner of feet issues, including being flat footed, bunions, edema, swelling and more. Microfiber - The micro polyester used on the outside of these slippers is incredibly soft and plush. You will definitely feel the difference here compared to other slippers. TRP Sole - This is a light yet very durable rubber that Muk Luks uses on the soles of these shoes to give you traction and flexibility without adding weight. Memory Foam Inserts - You'll definitely be very comfortable walking around in these shoes, as they have memory foam inserts that are thick and incredibly plush. Multi Color - If you're a fan of these slippers, you can grab them in colors like light blue, light pink and lavendar.