Note: O'Neill Wetsuit products can only be shipped and delivered to customers within the European Union (EU) O'neills TechnoButter neoprene feels great and gives you some extra insulation compared to regular neoprene lining without sacrificing flexibility like some thicker linings do. The seams on the Psycho 1 are blind stitched you can see the stitching on the inside but it does not go all the way through the neoprene the outside is sealed with a wide band of silicone like rubber this makes for a durable water tight seam but you do lose a bit of the flexibility of the seam compared to thinner seals or taped seams that you find on the O'Neill Psychofreak C-skins wired or the Xcel Powerseam. The minimal panel design is obvious when you look at the wetsuit one big panel means more stretch and less seams mean less chance for water to get into the wetsuit. The bum panel is not split into two sections like many other brands which O'Neill tell us is because t :: Men > Wetsuits Size: LARGE TALL.