Shaft Height: Approx. 5 1/2'' Tall. Heel Height: Approx. 1 3/4'' Tall. The Snowblime makes enjoying winter remarkably easy. With UltraDry waterproofing and 200g 3M Thinsulate Insulation technology, the Snowblime will keep your feet warm in the frigid outdoors. Its CuShin technology minimizes the pressure some people feel on their shin from the top of the boot tongue.