enzosdad wrote:Wearing something under a wetsuit defeats the purpose.
You're wrong there!
Divers wear aqua skins (lycra/polartec bodysuits) under their wetsuits all the time. It adds to the warmth as it restricts water flushing. They also make donning nylon interior suits easier. Skin in style suits are the only suit that doesen't benefit from wearing anything underneath, as they seal to the skin like drysuit neck/wrist seals. With those, shaving arms, legs, chest and back helps the suit seal. My well compressed 5mm (3mm now) skin in suit still gets me about an hour freediving in 35 degree water before I have to call it quits.
As my diving instructor told the class back in 87, "Guys, wear a racing style brief. Gals, wear any one piece that criscrosses or comes together in the center of the back and doesn't tie. Don't wear bikinis or baggies because the suit will yank them off or bunch them." Bike short "jammers" work good, but they can cause compression problems in the legs if the leg elastic is too tight.