When I bought the SLi Tri Suit I intentionally chose a size smaller than usual because I wanted a super tight sitting suit, especially for the swim in short course races where I didn’t want to use a swimskin. So, first time I wore it was last weekend during a Triathlon race and I have to say, although it’s a size smaller it suits perfectly. It’s not too tight and my swim was the fastest ever (PR)!
On the bike I noticed the comfortable padding, which is not too thick but big enough to cover those areas where you need some padding if you are riding a split nose saddle like the Adamo ISM. (I know what I am talking about because I used a different trisuit before and had terrible shavings).
Also during the run the suit felt great to wear. One thing I noticed when the really heavy breathing started - the suit felt to be a bit tight around the chest giving me a kind of feeling of being laced in (, which is obviously because I got a size smaller ... ) Anyway, I opened the rear zipper and realized immediately the feeling disappeared and I felt great again.
Overall, I am super happy with the suit and result - Overall winner, just PERFECT!
My conclusion, if you want a super tight sitting short course SLi Tri Suit consider getting a size smaller. For me it worked well.