A compression bra is a supportive garment providing firm, uniform pressure to the chest, primarily used for post-surgery recovery (like mastectomies, augmentations, reductions) to reduce swelling, support healing, and stabilize the area, but also for managing lymphedema or for everyday support and shaping. Made from smooth, often seamless materials (nylon/spandex), they differ from sports bras by offering medical-grade, even pressure without irritating seams, helping fluid move and skin heal smoothly.