The size tag has been cutout, but I'm guessing it's a 6 or 8. Use the measurements as a guide. Excellent condition with minimal wear. Key features Luon fabric is sweat-wicking and four-way stretch added LYCRA fibre moves with you and stays in great shape this technical fabric is sweat-wicking, four-way stretch and breathable practice the power of choice wear this tank with your favourite bra to get the perfect support racerback straps give you full freedom to move long length helps this tank stay put and is great for layering imported Fit + function designed for: yoga, run, gym everything! fabric(s): Luon fit: tight shelf bra: no support: none coverage: medium length: hip