Warmer Wetsuits

[BoMan]

I read The Science of Surfing, an oceanographer's take on surfing by Kevin Okun.
https://www.scienceofsurfing.com/?utm_campaign=pub&utm_medium=web

The current article "How to make warmer wetsuits" looks into whether the outer surface material – specifically slick (smooth) neoprene versus traditional jersey-lined neoprene – affects thermal properties. The research found that the strategic use of slick neoprene panels in chest and back areas could significantly enhance wetsuit warmth without increasing thickness.

I feel like the Michelin Man paddling around in my 5 mil suit and will consider this when it's time to buy again.
Thoughts?