- Size: 38/39 • Useful tips: Since the shape of each person's foot can be different, the height of the instep and the sole of the foot also vary. Choosing the size that best fits the shape of your foot is crucial. We recommend choosing a larger size if you prefer a more relaxed and comfortable feel. • Ergonomic design: The interior of the slippers is slightly recessed, with perforations on one side for greater breathability. It perfectly wraps your feet, with the toes snug and a semicircular hole that balances the pressure, providing a comfortable and aesthetic fit. • Lightweight, thick, and flexible sole: These massage slippers have a sole approximately 4 cm thick, which can increase height in men and offer a high heel effect in women. The ultra-rebound soles are super soft and wear-resistant. • Recommended uses: EVA material can shrink and deform at high temperatures, so it should not be exposed to the sun for a long time. They are ideal for the bedroom, bathroom, spa, gym, pool, beach, garden, vacations, dormitories, public showers, steam baths, camping, among others.