Rose Robinson
Contributor
Your first sentence is wrong!Scuba diving is done at ambient pressure. There is no extra pressure exerted on a drysuit at depth.
Drysuits designed for surface or diving use are available in a variety of materials and thicknesses. Public safety organizations often prefer to use heavier, thicker material for puncture resistance and durability but sometimes they also use thin shell suits depending on requirements.
You have obviously never been subjected to drysuit squeeze at depth under the pressure of multiple atmospheres.