Package Includes: You will receive 15 pieces of alloy heart shaped loose-leaf ring binders in 3 colors the size is 28mm in diameter 4mm thick you can choose different colors according to your own preferences to create a unique loose-leaf ring binders Reliable Material: The loose-leaf ring binder is made of high-quality alloy material which is sturdy and durable even if it is used frequently it can still keep the ring opening and closing smoothly and the page flat which effectively prolongs the service life and reduces the frequency of replacement Easy to Carry: Compact and lightweight this binder is ideal for on-the-go use. Whether you put it in your backpack handbag or pocket it is easy to carry allowing you to record your inspiration plan your schedule and don't miss any important information anytime anywhere Strong Compatibility: Whether it is A4 B5 or other sizes of notebooks and loose-leaf paper the loose-leaf ring binder can be perfectly adapted. The flexible spacing of the rings ensures that the paper fits snugly and does not easily fall out keeping your notes neatly organized Widely Applicable: Whether it's student classroom notes workplace meeting notes creative design sketches or travel journals it's easy to handle. Its strong functionality and flexibility make it ideal for a variety of scenarios making your note content more colorful