Replacing a drysuit zipper is not DIY, and it's a very expensive repair. Preventative care, such as like regularly cleaning and lubricating drysuit zipper teeth, will help preserve zipper health. Also, using good techniques to roll and fold the drysuit for transportation to and from the water will help prevent fatal damage.In this instructional video, NRS Repairs guru Josh Gile goes over all the tips for ensuring that the zipper will last the life of your drysuit.