Waterman Philéas is a series of writing instruments including fountain pens, rollerballs, ballpoints and pencils produced by the Waterman pen company. It is well-known because of its good price-quality ratio and is therefore often recommended for novice fountain pen users and collectors. This series is now discontinued, but is currently still available from numerous vendors. The fountain pens are supplied with a convertible system for filling with either bottled ink or an ink cartridge. They are manufactured in several different colors and nib widths.