Regalite and O’Sea clear vinyl sheets are press-polished window material with a very good optical clarity and durability. Made start to finish in the USA, Regalite and O’Sea window materials are high-end marine grade window materials manufactured from thermoplastic clear vinyl material with a highly polished finish that result in a durable, soft, flexible and outstanding optical clarity. This specific manufacturing process provide them a superior UV resistance to avoid yellowing and brittleness that is often associated with other crystal windows. The weathering capability of Regalite & O’Sea press-polished window have been tested and proved time and again to be the leading choice for marine applications.