- Size: 38/39 • Breathable material: the breathable knit material can keep your feet dry and comfortable. • Elastic fabric: the elastic upper line makes it easy to put on and take off the water shoes. • Rubber sole: the non-slip sole provides good protection for your feet so you can stay away from hot sand and stones. • Barefoot feeling: the water shoes are comfortable and flexible and give you a barefoot feeling. • Easy to carry: the swimming shoes are lightweight and soft, which makes them foldable and easy to carry.