The straps haven?t rubbed blisters or hurt her in any way. I plan on using this as a shelf rack for my outdoor plants. The remote attached to the cord allows you to change volumes, mute, and deafen with ease. Functionality: eh, Im not a fan of the buttons on the earbud either way. IT WORKS! Recomiendo que cuando te los envían compruebes si la parte trasera está dividida y pegada, o es contínua. The sound is a lot better than my Airpods and these earbuds have noise-cancelling built in, which is very helpful in loud environment. If I order another pair I will order a half size down. I didnt even try it because it doesnt come with a safety seal which is just unacceptable for the wide opening it has. Sound quality was great but connection was TERRIBLE!