I love these and wear then everyday. Great Bluetooth dongle. 02 to produce? Theyve really helped with her quality of life. I tried the jaybird x2 and the jabra coach before this, both which I returned - the jaybirds came off during olympic lifts and the jabra lasted only 4 hours which wasnt enough for my long day of listening. Die Farbe und die Aufdrucke lösen sich bereits in den ersten Tagen ab. Connects to Zwift with no problems over bluetooth. I am not sure if Under Armour has changed the material (they looked identical) or I received a faulty pair?I purchased another pair today to give them one final chance. ???? Firmware update JBL! Loved everything about it except that the fabric is a bit stiff and the metal ring digs into my feet after a while.