Sorel Tivoli IV Tall Boots. Ideal for cold winter days, this tall winter boot packs serious tread, insulation and an even sportier yet sleek look. Featuring 100 g insulation for warmth, a comfort EVA footbed, and fully waterproof construction, you'll defy the weather. UPPER: Waterproof suede and PU coated leather combination with faux fur collar. Microfleece lining. OutDry waterproof construction. Footbed: Die cut PU-like EVA footbed, microfleece topcover. Heel height: 1 3/4". Platform height: 1