A broader surface to massage the underside of the foot yet small enough to fit into those arches.
Get into the habit of using this daily, working those tender spots, avoid rolling over bone and best to start lightly.
Made with 100% cork, best to wipe down regularly with mild soap and water and allow to air dry.
Cork will break down the in the compost, so at the end of it's life, break it up as best you can and pop into your compost. (Ideally though this will last a very long time when cared for).
