The Crescent Filler is famous for its easy-to-fill reservoir. To fill your fountain pen, simply press the crescent on the barrel to empty the rubber bladder inside; as the crescent is released, ink flows back into the bladder. Offered in a choice of five finishes, from the simple conservative to the bright and cheerful, or downright flamboyant hand made resins, each Crescent Filler fountain pen is well made, high quality, and makes for an affordable fine writing instrument. Each Conklin fine writing instrument is housed in a luxury gift presentation box lined with luxury satin. Ideal as a perfect gift for yourself or a loved one, this model is the the right size for both men and women who use fine writing instruments in their daily professional lives.