Intuition Liners have been on some of the longest and most arduous backcountry tours and mountains in the world. Consistently, climbers and touring skiers have praised Intuition liners for their warmth, comfort, durability, lightness, and performance. These liners have a lower cuff for touring and plastic climbing boots yet they offer better support than stock liners due to the overlap design and the ULTRALON foam. These liners are great for the Denali client and should be molded at a place that knows what they are doing. Give us a call if you have questions.