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 & 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 & slip resistant. This collection uses a hand-sewn stroble construction making it strong and extremely flexible.