Sports sandals of the Polish brand BIG STAR. The upper is made of textile material, while the platform with the insert is made of foam material. The sole is rubber. Velcro fastening makes it easy to adjust the shoe to the width of the foot. 
Size chart: 40-25.5/41-26/42-26.5/43-27/44-27.5/45-28.5/46-29cm

Material: upper: textile, sole: rubber