Radiantex™ Replacement Boot Liners (816 GWR) Blue F-51 felt is similar to

F-51 felt is similar to F-3 felt but made in thicknesses less than 1/8 inches and used where a thin

and cushioning material

1/8" (3 mm) Thick - 8 oz/sq yd

Please note

Radiantex™ Replacement Boot Liners (816 GWR) Blue F-51 felt is similar toThermal Protection Guaranteed The Radiantex Replacement Boot Liner offers triple protection against extreme cold with the most innovative thermal technology. Each liner has three layers: Radiantex aluminum on the exterior to reflect the cold, a layer of blended wool felt that insulates and locks in moisture, and a polypropylene inner lining to wick moisture away from the foot. Reinforced with Naugahyde heels, the Radiantex Replacement Boot Liners are