In order to determine the size top or girdle that best suits you, measure around your chest (for tops) or waist (for girdles). Round up to the next inch and refer to the chart below. 

Size	Chest (Inches)	Waist (Inches)
SM	34-36	28-30
MD	38-40	32-34
LG	42-44	36-38
XL	46-48	40-42
2XL	50-52	44-46
3XL	54-56	48-50

In order to determine the size forearm pad that best suits you, measure around your elbow. Round up to the next inch and refer to the chart below.

Size	Elbow (Inches)
SM	8-9
MD	9-10
LG	11-12
XL	13-14
2XL	15-16