At 5'1" and 105lb I found the size S to be too large for me both in the butt and length, so after exchanging for an XS I found it to be a perfect fit! The way it lays over my butt makes it have some great curves and I did a power yoga class in them because they were so flexible. I sweated quite a bit in that class but they didn't retain the odor and I don't plan to wash them very often per the Wolven wash care guidelines. I think that Wolven had these sold at a fair price for the extra work of using recycled plastics and design costs. And who doesn't love zip pockets??