Bra is missing the tag.  Sizing is based on the measurements as seen in the pictures.

This Lululemon Cadence Crusher Bra Strive Multi Black Reversible is a high-support sports bra perfect for any performance or activity. The solid pattern and pullover closure provide a comfortable fit, with a full cup coverage and wireless underwire type. The bra is made of a blended fabric that is machine washable and features moisture-wicking technology to keep you dry during your workouts.

The bra is in pre-owned condition but has been well taken care of. It comes in a size 2 XS and is from the Lululemon brand. The bra is perfect for women who enjoy activewear. K590299