mANY OF THE NEWER BIKES DO NOT HAVE THE NARROW TUBES THROUGHOUT THE FRAME ANYMORE AND SO IF YOU ARE CARRYING OLDER BIKE IT WOULD WORK WELL BUT ID YOU HAVE NEWER AERODYNAMIC STYLES OR HIGHER END BIKES THEY WILL BREAK. For the past few summers, he wore a pair of Keens that lasted 3 years and still look great. If you expect that you will be wearing a sock, then you might want to consider the next larger size. Im running a 50" on the front of my honda pioneer and a 20" on the back. By the end of the night we had a whole group of us chanting SUPER. I found my iPod mini Gen 2 in a box and it just so happened to still work but I had no way of finding a charger! Love this brand Im thinking that theyre no longer manufactured due to the fact that everybody is going wireless, but for under $10 you will not find a better pair of buds on the market. And the range of the Bluetooth is abysmal! Not too fond of the height of these but for the price Im not complaining.