It can hold the earbuds, a short charging cable, the charger, it comes with a micro fiber cloth for cleaning. Having previously owned closed back headphones before I was not entirely sure what to expect with these open back headphones but I could not be more impressed. So fix it! I dont even have to refer to the manual. Stylish and well constructed. A "Big Kid" size 4 is like an adult 6. a longer area that is soft, versus cotton-covered hard wood stick. Fit great on my bike if I was tall enough Schwinn Candis womens 26 in. They arrived in excellent condition and packaging. The instructions might be a good help with this whole process, only they are exclusively in Mandarin.