Sizing Chart (Adults) :(Rash guard should be a compression fit)
XS | 95-115 lbs – 140 lbsSmall | 115 lbs – 140 lbsMedium | 140 lbs – 165 lbsLarge | 165 lbs – 190 lbsXL | 190 lbs – 225 lbs2XL | 225 lbs – 270 lbs3XL | 270 lbs – 315 lbs