Wide box area for your toes. We did not have to worry about purchasing an expensive pair of slippers that would accommodate a 4E. I expect more from a company that charges this much for a soundbar. AND, I wore them as is, no socks, just foot on shoe :-) . Construction:The HD203s feel well built. This mic was so much better than I expected from a USB device. I hate to toss them and I dont think a cobbler can replace the soles with this same grippy material. Slide to control volume. I can take my dog for a walk up hills and down, and my feel dont feel worn out after the walk. Im one of the very, very few people who cannot use the apple air pods.