Tsubo - Apogee (Off White Leather) - Women's: Tsubo means pressure point in Japanese and is designed with the fashion conscious in mind. Casual chic slip-on shoe. Distressed leather upper with goring for easy on/off. Hollowed out lightweight rubber sole to give cushioning and flexibility. 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.