You can store some shoes on the button to. The cups themselves measure 3 1/8" across, with the actual speaker hole being 1 5/8" across and 1 7/8" vertically. 5/5 will purchase again and reccomend! When I want to use it for quiet background music, its sometimes a bit louder than Id like; and 2) I cant really leave one room of my apartment (iPhone in my pocket) and have the speaker continue playing a room or two away. I really hope the manufacturer sees this review and the reviews with a similar complaint. However when I wear them, it feels just like walking on the floor. Caution on size! The Senns are the weakest in this regard, and the Sonys about in between. Ridiculously darling slippers! Volume levels are good and connection quality is excellent.