Back Closure: Indicates that the bra closes in the back. A back closure bra normally has two or three rows of hook and eye closures and three levels of size adjustments.

Breathability: Refers to the ability of a fabric to allow airflow and generally means that the fabric will not hold in moisture. To test a bra, blow through the fabric to see if air can pass through.

Center Panel: A piece of fabric that connects the bra cups at the center front. Also called the bridge, center connector, center gore, or centerpiece.

Comfort Straps: Typically wider than average straps and can sometimes be padded or lined. The straps more evenly distribute the weight of the breasts to allow for more comfort.

Compression: Holds the breast tightly against the chest to reduce motion.

DriLayer: Fabric transfers moisture away from the skin to the outside of the fabric for evaporation. DriLayer is registered by Moving Comfort.

Encapsulation: Indicates that the bra is divided into two cups that surround each breast individually. Often this is combined with compression to prevent motion from side to side, as well as up and down.

Front Closure: Indicates that the bra closes in the front. It can be the typical hook and eye closure, or a zip front.

Padded: The bra contains padding, which often is in the cups. Padding can be desirable to prevent the "headlight" look or for women who want a uniform look.

Racerback: The back straps meet in a V shape in the back between your shoulder blades. This design allows for a wide range of arm movement and prevents straps from falling off your shoulders.

Underwire: Bras contain sewn-in wiring that runs underneath the breast in each bra cup. Underwire helps to lift and separate the breasts for better shape and extra support.

Wirefree: Bras without underwire.