SEALING THE DEAL
Rolled hems in the neoprene are rugged and comfortable, but they must fit very snugly to be effective, and they sometimes stretch over time. O-rings of smoothskin do a good job of sealing, provided they’re snug enough, and they’re easy to don and doff, particularly in thinner suits. A relatively new style seal uses an edge that tapers to the end. It’s very effective as long as it makes full contact, is easy to don and doff, and very comfortable. Long cuffs of smooth-skin make a very effective seal with a good fit, and they are less prone to stretching out. They can be a bit sticky to get on and off.