“This is my first time trying their period underwear. I usually order an XS in their underwear but for the “first line leakproof” i had to order a Small. They fit perfectly around my wait and thighs BUT they are a little butt saggy were the material inside is sown near the back of the butt. It isnt terrible, its just something i can feel a bit when I tried them on. I cant speak to their leakproofness yet until my period gets here :) but i look forward to wearing then. I WISH they would redo the TRUNKS, because i prefer those style over hipster for all of my underwear. But the design of the padding inside the TRUNKS is odd. I will wait till they change it up (:”