Sole Material -Croslite Color Family -Grey Upper Material -Synthetic Look elegant by sporting this pair of charcoal and light grey lace-up shoes from Crocs. The synthetic upper keeps your feet snug all day long. It comes with a croslite sole that gives you enough traction to step on those slippery stretches. The croslite midsole offers lightweight cushioning. The microfiber footbed and soft knit collar ensure maximum comfort.