Advice size S for waist 60-75cm; Advice size M for waist 75-85cm; Advice size L for waist 85-95cm; Advice size XL for waist 95-105cm; Advice size XXL for waist 105-115cm. Note: 1.The smell will be gone after washing 2.Please carefully make sure about your size before make order. 3.If you do not sure about your size,please contact us.We will give you help. Product Description: Item:Back Support Posture Corrector Brace Model NO:KSY-Y002 Size:S M L XL XXL Color:Black,white,green,light green,orange,pink,blue Feature:Neoprene Shoulder Back Support Belt For Men Women To Support Back And Relive Back Pain Material:Neoprene Posture brace Function: Supporting design helps correct bad body posture of back and shoulder Pulls shoulder & back to correct posture Provides gentle back support Prevention of adolescent customary humpback 1.