Frog Hair's added suppleness compliments the refractive qualities of fluorocarbon to deliver the most stealthy, drag-free presentation possible. This tippet uses ultra high molecular weight PVDF fluorocarbon for increased flexibility; after Frog Hair's patented Gamma process, it has up to 2X the suppleness of others. A IFGA Class rated for sizes marked with '#' above. 25 meter spool.