What Our Gearhead(R) Experts Are Saying:"When I slip these liners into my boots, I'm immediately impressed by the comfort and support they provide. Whether I'm skiing or just trekking through snow, these liners stay warm and dry, enhancing my performance and keeping fatigue at bay. " We pair the DH Tongue HD 9mm Liner with our favorite boots for an unparalleled skiing experience. Intuition's design ensures a snug fit, perfect for long days on the slopes. The advanced materials in these liners provide not only warmth but also a level of customization that allows us to mold them to our feet, optimizing both comfort and control. The technical prowess of these liners shines through, offering thermal regulation and moisture management, critical for all-day activities in the cold.