GS - 40 to 65 lbs.
GM - 65 to 75 lbs.
GL - 75 to 90 lbs.
WS - 90 to 110 lbs.
WM - 110 to 130 lbs.
WL - 130 to 155 lbs.
WXL - 155 to 180 lbs.
WXXL - 180 to 220 lbs.
XS - 90 to 110 lbs.
S - 110 to 130 lbs.
M - 130 to 155 lbs.
L - 155 to 185 lbs.
XL - 185 to 225 lbs.
XXL - 225 to 275 lbs.
4L - 275 to 340 lbs.
(4L equal to XXXL custom only)
BOYS
YS - 40 to 60 lbs.
YM - 60 to 75 lbs.
YL - 75 to 90 lbs.
GIRLS
GS - 40 to 65 lbs.
GM - 65 to 75 lbs.
GL - 75 to 90 lbs.