This suit is a bi-laminate shell suit with a self-donning front zipper and is probably the best value dry-suit you can purchase particularly when you consider the fact that it is self donning. I have sold several to pool repair divers, recreational divers, and even 1 tech diver, and they have all found this suit to meet all their needs and to be holding up extremely well. My tech diver purchased it as a temporary measure until he could afford a more expensive model and that was 3 years ago and probably 100 cave dives or more ago plus many other non-cave tech dives. Suffice it to say he had not yet felt the need to upgrade it. Please feel free to call me (770) 419-1976 or pm me with any specific questions you have about the suit or if I can be of any other assistance to you. The suit is made in the continental U.S. so that's a bonus too. Cheers, Jack