XMWEALTHY Women's Slip-On Platform Air Mesh Shoes Black US 8.5 poly-rayon Synthetic sole Platform Height:4.5 cm(1.8 inches) Cushion make you feel more comfortable US 5.5 is smaller than normal size,US 8.5 is larger than normal size Breathable inside,Breathable and comfortable mesh upper It is very suitable for most people in summer.