A binder trans is a compression garment worn to flatten the chest and create a more masculine profile. Binders are commonly used by transgender men, non-binary persons, and cisgender men with gynecomastia. Binders can be made of various materials, including spandex, nylon, and elastic or non-elastic bandages, and come in different styles, such as half-length or full-length. It is important to use binders from reputable companies or high-impact sports bras to avoid health risks such as difficulty breathing, backache, skin rashes, and deformity of the ribs. Binders should not be worn at night, for more than 8-10 hours a day, or while showering, and it is recommended to take at least one day off a week from chest binding. Binders are not classified as medical devices, but some doctors and parents have concerns about their safety. It is important to avoid using duct tape, plastic wrap, or bandages for binding, as they can cause skin irritation and damage.