After writing something about what drysuits WKPP uses, I checked with my dive partner to find out the genesis of this decision, since I had always used only the TLS 350. He said the following. There are four basic types of suits with several permutaions and combinations: shell, neoprene, rubber, and crushed foam. In each case the thermal protection deep will be from the insulation (the neoprene compresses). When you add the necessary insulation to the neoprene suit for a long dive, the buoyancy becomes too positive. The rubber is too bulky and slow, but is the dryest of them all. The crushed foam seems like a good idea, but is difficult to keep from leaking, and is not as flexible as the shell. The best suit for swimming and overall freedom of movement is the shell. When custom fit, it becomes as fast as the neoprene when scootering. To check this, ask the guys who have dived neoprene with me while I dove the shell (Jarrod, Casey, Irving or the "Rat"). The trick to the TLS shell is getting one that is properly put together to start with so that is doesn't leak. Then you have to be very careful with the zipper. I just knew that it worked. I have three TLS 350 DUI suits. I use the latex seals, the auto deflator, the balanced overboard discharge, and center inflator (so I can operate my bc and suit at the same time with the same hand which also has the light). Gators or ankle weights are not necessary if the suit is custom fit. Service from DUI is excellent, but you have to pay. Whining about warrranty will slow you down - the last thing they need is cave divers. They know when a problem is theirs and not yours. I sent a suit back to have some leaks fixed and they sent my repaired suit back followed by a new custom suit at no charge (they said something was wrong with the material). I hope this helps. - George Irvine
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