Tsubo - Zibal (Storm Cloud/Black/Black) - Women's: Tsubo means pressure point in Japanese and is designed for the fashion conscious in mind. Casual chic lace-up striped shoe with a combination neoprene/mesh upper. Hollowed out graphic designed rubber sole to give cushioning, lightweight 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.