I am 140lbs. . .5'4". . . I measured at about 33inches around. I ordered the XL. . . But I shoulda listened to the reviews that advised me to order a size down because I'm wearing it on the tightest clips. It is snug...but not snug enough to last me a month. I will have to order a size Large soon. The quality of the product seems very good and it is well stitched..durable and strong. It also fit my daughter on the tightest clips and she is 150lbs and 5'8" (if this helps anyone).