Tsubo - Asios (White/Grey/Red) - Lifestyle Departments: Tsubo means pressure point in Japanese and is designed for the fashion conscious in mind. Stylish lace-up striped shoe with combination mesh/neoprene upper featuring a comfortable mesh collar. 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.