The Atopa is a mid calf boot with contrasting leathers. This style has a heel cup for support, inside zipper for accessibility and laces for adjustability. The Atopa has a 6.5'' shaft. The Atopa has padded technical lining for comfort, warmth and moisture absorption. Naot's removable, anatomic cork and latex footbed is wrapped in pampering suede and molds to the shape of the foot with wear. The Koru Collection features a 1'' polyurethane sole which is extremely lightweight, durable and slip resistant. This collection uses a hand-sewn stroble construction making it strong and extremely flexible. Material: Leather, Suede, Man Made, Latex, Cork.