Crocs 209401-76M CLASSIC SLIDE Unisex Sliders Acidity. These sliders are designed for comfort and feature a slip-on closure. The upper, lining, and sole are all made of Croslite material, making them lightweight. They have a flat heel height (under 2.5cm) and are regular width. The item weight is 0.8 KG. Available sizes: 4,5,7,8,9,10.