• ADJUSTABLE SIZE--4 Size Available.Figure 8 Back Posture Corrector with breathable and latex-free adjustment strap.
• OVERALL CORRECTION--Shoulder Support Brace Pull back your Upper Back to the right position. And then improve your whole body posture during work or life.
• USE ANYTIME-You can use it not only when you are sitting on computer or driving a car, but also when you are playing sports or gardening. What is more, you can use it at home when you are doing housework, or watching TV.
• PRACTICAL--Posture brace filed with Lightweight neoprene,can be worn comfortably under or over clothing.Correct your posture all day.You can put on and adjust by yourself. 
• USE DAILY--This lightweight back support should be worn daily. First couple of days wear it for 10-20 minutes only, than add 10 minutes every day. Your back and shoulders will slowly adjust and you will build muscle memory for the right posture.

Descriptions:

• Easily get perfect confident posture - start standing, sitting much straighter.
• Align your shoulders, spine and upper back.
• Improve posture & reduce slouching immediately with easily adjustable dual strap design.
• Lightweight padded neoprene corrector can be worn comfortably under or over clothing.
• Eliminates neck and back discomfort from sitting with rounded shoulders in front of the computer.
• Wear all day to retrain your posture- it's nearly invisible when worn under a shirt.

S:   Chest size: 46 - 68 cm / 18 - 26 inch (Suit for weight: 20-40KG)

M:   Chest size: 68 - 91 cm / 27 - 36 inch (Suit for weight: 40-60KG)

L:    Chest size: 91 - 119 cm / 36 - 47 inch (Suit for weight: 60-90KG)

XL:    Chest size: 119 - 150 cm / 47 - 59 inch (Suit for weight: 90-100KG)

Package included: