Im surprised at the speed of delivery. M4 and M5 buttons on the side are also slightly smaller for less accidental presses. It definitely reads like an everyday persons book but with the knowledge and research of a doctor or scholar. Wore them all day and night! I have tiny ear openings, and this fits me well, thanks to the three insert sizes and the over-the-ear loop. It follows an undocumented laborer of whom his employers know almost nothing, who rises to leadership when a natural disaster leaves his American employers and their neighbors powerless?literally and figuratively. The main panel is just a wide verlco but theres extra straps that cross over that part which is amazing because it makes it tighter but also stops it from coming undone when youre running or working out. For runners, especially, this pair of earbuds is a godsend. Returning for refund ASAP Since sizing can vary I ordered the S/M/L pack.