Ships from Hong Kong. Safe,Portable,Waterproof,Compact,Permeable,Adjustable. Easy to carry headphones, Key, Money, credit cardand so on. Adjustable magic tape strap protects and stabilizes device without slipping or constricting. Ideal to use as workout accessories for women, men, boys and girls. Each size: one size fits most. The length of the bag is 15.5 cm, and the width of the bag is 9 cm.