What is the difference between open-cell, “split-cell” and skin-in wetsuits?
Freedivers generally refer to the best freediving wetsuits as skin-in or open-cell when these wetsuits have no fabric lining. This is simply because wetsuits are divided into two categories: Wetsuits with fabric lining and wetsuits without fabric lining. By lining, we mean fabric material, such as Nylon, Lycra, plush, etc., that covers the inside of the wetsuit, which is in direct contact with the diver’s skin. (However, both applications are not technically correct. But we will compromise and accept them, in order not to complicate matters.) “Skin-in may also be what is referred to as smooth-skin inside. Meaning that the Neoprene sheet was used as is, without splitting, therefore defeating the purpose of perfect fit, adhesion and waterproofing. Many wetsuit manufacturers will use this design and market the wetsuit as open-cell or skin-in, thus confusing the customer.
