At Matuse, we strive to make products and experiences Ichiban aka the best. We design for longevity and performance and take this responsibility seriously. In 2006, we were the first to introduce premium Japanese limestone rubber to the surf market from Yamamoto Corporation called Geoprene.Matuse Limestone Geoprene is a completely closed cell structure, absorbing less water (98% water impermeable) which means it's lighter in-and-out of the water, and takes less time to dry for your next session. This innovative material is layered with titanium-alloy solution to help retain your body's warmth and has the ability to stretch 350% its size while maintaining superb elastic memory aka the flexibility you need without losing shape. The combination of these features makes Geoprene the longest lasting wetsuits you will find in the world: warmer, lighter, more flexible and kinder to Mother Nature.