They fit well and I ordered them the size I usually wear. Its a solid shoe. I fall asleep with it in my ear so it has to be small and comfortable. Neither are as loud as the much older units, both have extremely low audio is the phone is answered by turning on the earpiece, both have problems adjusting the audio. I wear them year-round in the Arizona desert. I have one vacant space and the last which cannot be used due to how wide one plug is. We?re told they were true to size. When the earbuds are in and sealed properly, the bass is amazing! Durch ihr geformtes Fussbett haben die Kids einen super Halt. I wanted to love these earrings.