Warmth will easily be found with the protective comfort of the 8mm Zylex Liner for Kamik. ; Insulation layers: &#8226;Layer 1: 4 mm red colorfast polyester wicks moisture away from the foot. &#8226;Layer 2: 4 mm black polyester felt traps body heat keeping foot warm. &#8226;Layer 3: 1mm thermal foil deflects cold air allows moisture to escape. ; Made of 97% recycled material. ; Reinforced seams and heel guard provide superior durability. ; Easily removable for quick overnight drying. ; Liner fits styles like Snowbank, Coaster, Waterbug, Rocket, Champ, Bella, Countess, Blast, ImpulseG, and Dynamite. ; Comfort rated: -40&#176;F/-40&#176;C. ; Made in Canada. Measurements: ; Weight: 3 oz ; Shaft: 7 1 2 in ; Product measurements were taken using size 11 Little Kid. Please note that measurements may vary by size.