It’s really important that you always wear your binder in the correct size. If you’re unsure about your size, contact our customer support team via email at hi@chestbinder.co. We will be more than happy to help you. If you’re starting out with binders we recommend building up the time that you wear. For example, start with 2 hours, the next day 3 hours, and so on. Build this up to a maximum of 8 hours per day. It's also important to remember to never sleep in a binder as these are compression garments. We also never recommend double-binding/wearing two compression garments at the same time layered on top of each other. You can read our binding safety tips here. If you’re experiencing any discomfort or pain while binding, please stop binding. If you are concerned about having potentially injured yourself, contact your doctor.