Tsubo - Hypo (Brown/Fatigue/Grey) - Women's: Tsubo means pressure point in Japanese and is designed for the fashion conscious in mind. Fashionable mary jane wedge constructed of leather/textile upper. Rubber bubbles for shock absorption and skid resistance. These "cushion oval bubbles" are designed on the sole for various pressure points of the foot - Tsubo's signature mark. Rubber outsole.