Read the bottom before making your final decision.

USA Kid's Shoe Size	USA Men's Shoe Size	Flow Binding Size	USA Ladies Shoe Size
11		XS
12		XS
13		XS or SM
1		XS or SM
2		SM
3		SM
4		SM or MD
5	5	SM or MD	6
5.5	5.5	MD	6.5
6	6	MD	7
	6.5	MD	7.5
	7	MD	8
	7.5	MD or LG	8.5
	8	MD or LG	9
	8.5	LG	9.5
	9	LG	10
	9.5	LG	10.5
	10	LG	11
	10.5	LG
	11	LG or XL
	11.5	LG or XL
	12	XL
	13	XL
	14	XL
	15	XL

Consider the following before making your selection.
If you are between sizes, the smaller binding will offer a snugger fit and offer less play but may be harder to get on while a larger sized binding will be easier to put on but can be sloppy and offer less control. Flow snowboard bindings are unique. Not only are they easy to put on and remove, they are comfortable.