The long run will really tell the story. When I got my TLS suits 7 & 8 yrs ago, I was at 230 lbs. Over the past 3 yrs, I slowly dropped to 175 lbs & the suits became very baggy. They were originally custom made to me. I was at 175 lbs when I was measured by Fourth Element & have lost weight to 160 lbs. The suit still fits very well with my fleece undergarments (about 350gm). I have had problems with my DUI suits springing leaks here & there & has been steadily getting worse. Each of my DUI's have about 400- 500 dives on them. They are just worn out. The Fourth Element suit, so far has proven to be tough. On one of my first dives in it, I tripped & fell onto my knees with my doubles,.. the suit passed that test,... However I will likely get knee pads installed, when I get the zip seals installed on it. The suit has very little drag & seems to be more sturdy than the TLS. I also like the slightly offset inflator valve. easier to find & get to, regardless of the configuration I'm using.