Collar Size: One Size. Fits Small, Medium, Large sized women and girls. (Not for XL, XXL or Above). there are elastic bands on both sides of the collar to adjust and fix it. You can easily tighten or loosen it according to your needs, making it comfortable and fit without worrying about falling off or untidy after a long time wearing Reliable Material: these practical half shirts round collar blouses are made of quality fabric, which feature fine workmanship, delicate and smooth appearance, clear and generous color, breathable and easy to clean and color fast, making you comfortable to wear in daily life Easy to Put on and Take off: the false collar top has no sleeves, easy for you to put on and take off. The simple collars are lightweight and portable to pack and carry around. You can fold them into your backpack or suitcase without taking up much space, and you can match or change collars in different colors to give you different styles during your travels Delicately decorate your featureless clothing. Easily get compliments from daily clothing matching. Beautiful party accessories,also as gifts for friends.