Size Chart S: The recommended lower bust is 60-69cm, and the usual size is 32A/B/C, 34A; M: The recommended lower bust is 70-80cm, the usual size is 32D, 34C/D, 36A; L: The recommended lower bust is 80-85cm, the usual size is 36B/C/D, 38A/B; XL: Recommended lower bust 85-95cm, usual size is 38C/D, 40A/B/C/D, 42A/B. Material: Nylon + Spandex [Chest Brace Up Shaper] This push up bra shapewear tops for women with U-shape design, provides comfortable support for your bra line.It is especially great to helps you prevent your chest droop and gather your supernumerary breast and creat a sleek slim hourglass body shape. [Improve Your Posture] This X Strap shapewear tops for women provides appropriate pressure to correct your posture and relieve pain,reminds you of keeping right posture all the time.Improving your posture effectively while maintaining maximum comfort.Makes you become more and more confident. [Breathable & Lightweight] This women posture corrector shapewear is made of Premium fabric,which is breathable and high elastic. You can wear it under your daily shirts and beautiful dress invisibly and comfortably. No one will notice you have it on but your charming figure. [Easy To Adjust] This chest supports for women is made with 3 rows hooks under chest which is easy to wear and adjust different compression level.You can wear your own bra for perfect snug fit and it wont squeeze your breasts to ensure you can wear this shaper comfortably all day along. [Perfect Chest Support Vest] This chest brace up vest shaper with thin and soft material can be worn under any clothing. It is suitable for those women who does not satisfied with their breast or want to prevent sagging, and the person who want to improve posture habit, build up their confidence.