The Frabill Extendable Flag fits on to any Pro Thermal Tip-Up. Measuring 20 inches tall, the Frabill Extendable Flag is eight inches taller than the traditional Pro-Thermal flags. The added height makes spotting strikes easier in deep snow and from farther away than ever before. The flag has a unique double hinge allowing it to fold into a compact size. The flag is bright yellow in color.