Ha! I use the black (for heavy body weight exercises) to practice and assist me in pull ups and its helped me sooo much! I am very happy with the way my project turned out. On fitting them it was immediately obvious that these devices actually cut down on the actual physical hanging space available. However, when I brought this up with the seller they immediately worked with me to remedy the situation. That being said after a few tweaks I’ve managed to get the wire into a good position for all day use. Considering its a wireless device, I am even more impressed. They really make you sweat. I do feel a bit too much pressure after wearing them awhile, but I have to say that I have yet to put on a pair of headphones that dont do that over time. Holds my 3 racquets nicely and seems to have enough space for another.