If you normally wear a 7. In the week that I have had this product, I have recorded 2 songs on my phone and it was a joy to be hands free for my guitar and see the track live on my phone at the same time. The sound quality when hooking up blue tooth through the phone is great! Plug the 3 USB cable into either a powered USB port or a USB charger (the cable is supplied, but you have to provide your own adapter), let it charge, cut it on, and start banging away. They are comfortable and stylish enough that I dont have to switch sandals when I step out for a minute. I am delighted with this. In addition, the bass is nice and full for the most part, however, it can be a bit punchy in certain songs. livered with precision and accuracy without distortion. I would probably buy them again though as they are quite comfy. I did make sure when we gassed up to recheck the straps, the one thing is I forgot to take along a latter, because Iam short, but problem solved I stood on the top of the front an back seats an loaded it