I am thinking of trying one of these. The price isn't too bad(I can't see spending $110 for the HSS Pro), but I have a question on the size or how they fit with heavier clothing. The size S/M goes to 150 lbs. which makes it borderline. The size L/XL sounds as though it is too big. Just wondering if using the S/M will still fit while wearing heavier clothes because I weigh exactly 150!