Impressively warm, surprisingly light and fantastically comfortable. The CRT (Central Removable Tongue) liner provides a great solution for skiers wanting a better fit from their ski boot, increased warmth or just need to replace an old or damaged existing liner. They’re the result of 2 years of development with the best boot fitters.The foam is thermoformable which means it can be heated and moulded to take a precise shape of the foot and also the inside of the boot shell. This eliminates pressure spots, removes excess space and locks in the heel, but it does need to be done by a professional instore. The removable tongue can be thermoformed too and positioned exactly, or even replaced with a foam-injected version. The liner can flex on the spine so they can be used in touring and BC boots without affecting the range of motion.A micro-fur upper lining increases comfort; loops on the tongue and rear of the liner help with getting the liner on and correctly positioned. A Merrymesh lower lining transmits energy efficiently and precisely.