O'Neill Women's GEM Ski / Wake Vest
Low Density Polyethylene which is expanded using nitrogen in an exclusive process (which cannot be duplicated) The foam is actually 3 times lighter than regular PVC foam and it absorbs 15-20% less water due to the closed cell foam structure. The resulting foam is approximately 10% more buoyant than PVC meaning we can use less foam in each vest and it will float the same.
What does H2OProShop have to say:
We love how buoyant O'Neill Comp vests are while not adding any bulk, the Nytrolite foam truly is noticeable right when you jump in the water. They are comfortable to wear, and impact resistant. We wouldn't sell anything that we gave a bad review, and O'Neill is on the top of our list for vest design!