Betty London JAKIKO women's Espadrilles / Casual Shoes in Blue Textile, Available in women's sizes. 3.5. Your Easy Shoes! Model with Y.E.S. technology: memory foam with breathability, durability & anti-bacterial properties. YES technology offers a cushioning memory insole that provides immediate & lasting comfort.SHAPE MEMORY: The foam, chosen for its durability properties, absorbs shocks during walking, which protects the foot & joints.BREATHABILITY: The foam used is also composed of open cells, promoting the evacuation of perspiration & thus good breathability for your feet.ANTI-BACTERIAL: In addition to its natural properties, open-cell foam is treated with anti-bacterial treatment. To learn more, click here. Free Next Day Delivery & Free Returns on all orders!