When Klim built the industry-first Adrenaline GTX Boot, it set the standard for technical snowmobile footwear. For the new Adrenaline generation, further perfecting and refining the boot was their goal. Adrenaline provides a dry, comfortable, and supportive riding experience across a wide range of conditions without impeding freedom of movement. Perfect balance of comfort and support. Stay warm and dry all day in wide range of conditions. High grip allows precision control of your sled. Gore-Tex® technology - Guaranteed To Keep You Dry™. 600 grams of 3M™ Thinsulate™ insulation. Insulation inside Gore-Tex® membrane ensuring a dry thermal layer. Extremely durable / aggressive sole. Moisture-wicking liner plush liner materials. Speed lace system. Comfortable yet stiff / durable sole. Internal cushioning.