The seam will stretch with the fabric and will not unravel far if broken. This seam will usually outlast the material. Other than the cost of the machinery and high skill level of the operator the only other drawback is that there are forty stitch holes per inch. How it works Neoprene works best if it fits snug enough for you to breathe comfortably and tight enough to restrict water flowing through the suit. By trapping the water in the suit, your body warms it up.
Neoprene is comprised of many small bubbles.
This trapped air is the insulating factor. When trying on a suit, sit in a kayak to make sure you will be comfortable around the waist and can reach forward. Ankle zippers are an excellent feature for ease in taking the suit on and off. Center front zips are great for guys to pee. Women have the disadvantage of having to take off all the top layers to pee.