Made for Matuse Family Member Joel Tudor, the 2103 Men's 2mm Top jacket is named after his childhood stomping grounds of University City, CA. Let us clear up the confusion: U is the 21st letter of the alphabet and C is the 3rd, resulting in an homage to the UC as 2103. So, be in the know as you zip up this warm, durable, lightweight and high performing jacket and head out to rip cool to warm waters 65 degrees Fahrenheit and above. Crafted from 2mm of eco friendly Geoprene which is actually made from limestone, hence the name GEO, this jacket's material is over 30% more water impermeable than petroleum based neoprene suits, far less water absorbent for a lighter and quicker drying performance, and offers 400% greater stretch than your own skin for an unbelievably flexible design that never gets stretch marks. Geoprene is naturally warmer than neoprene, so less of it needs to be used, resulting in not only a lighter design, but also a far smaller impact on the environment when manufactured. The front zip entry makes taking it on and off insanely easy, while the over sized zipper tab makes for a quick grip.