Quiksilver 1.5mm Syncro Neoprene Jacket Black ! The Syncro Jacket is made of 100% Hyperstretch II Neoprene! On the back of the jacket is a short lower back zip for easy on and off! The 1.5mm Syncro Jacket not only provides UV protection it will also provide you with thermal protection, keeping you warm on those chilly days or early mornings. The Jacket comes with an integrated boardshort tie loop in the front to keep the jacket connect to your boardshorts comfortably.