The SP-57 Logbook Cover is made of rugged and water-resistant 600D canvas, and maintains a sleek and professional appearance all while providing ultimate protection to your valuable flight history. Once the log is full, the cover slides off and onto a new logbook. The SP-57 Pilot Logbook Cover fits The Standard(c) Pilot Log (SP-57) and most other logbooks measuring 8.5 x 5.25 inches
