Warm and flexible. Can't recommend enough.
I was recommended this by a mate as I'm a skinny, tall surfer who always freezes during the winter months. For years I have been too cold before I've been too tired in the surf but wearing this with the shorts under my suit has genuinely been a game changer. 2.5 hour sessions in January no problem, when I peel my suit down it literally steams. Warm and flexible. Can't recommend enough.