Decent size for the Helsinki, goes all the way down to the ground, was torn between getting the size smaller designed for 180cm pools and this one, made the right decision based upon other reviews.

Snug fit, saving me a couple of pounds a day keeping it at 38 degrees accordingly to my smart meter. Bought it once I’d put the Helsinki up so can’t say how much it would have saved getting it up to temperature.  Either way, should pay for itself this summer.