Backing things on Kickstarter, buying the smaller, lighter, ear form, foam bud, ear plug, around the neck, over the ear . Its not whats actually mentioned. They fit perfectly based on the size ordered. Super bequemer Schuh. So I bought a size 9 (In their size) per the reviews I read. The experience is phenomenal! UPDATE:I am a bit late on this update, but just havent gotten around to it, and with physical distancing, wanted to be sure I gave them a little bit more of a chance to get out into real use rather than just sitting on a shelf in my room when not in use. While depressing the button, pull towards the rear of the vehicle to slide the cover off. I think the notes in the instructions should mention that there are 2 nodes on each side because I broke off 3 of them, thinking it was completely smooth (sure that can be misconstrued as my fault for not reading THROUGH THE WHOLE INSTRUCTION BOOKLET FIRST), but hey, I?m not the only one who does that. The material is soft enough that they didnt rub on his feet and cause a fit when he wore them.