Men's lightweight 4F flip flops. This model has foam straps and an insole. The sole is anti-slip. The flip flops are incredibly comfortable and perfect for the pool or beach. You definitely need to have them! When choosing a size, please refer to the size chart. When choosing a size, please refer to the size chart. 40-25,5/41-26,5/42-27/43-28/44-29/45-30/46-30,5cm