Meet the Men’s Swellsole Neptune Sneaker by REEF, your versatile go-anywhere shoe in sleek black. These sneakers feature a lightweight, breathable stretch knit upper with an easy fold-down heel for ultimate convenience. Composition: Nylon. The ultra-lightweight and flexible EVA outsole paired with a ridiculously comfortable Memory Foam Sockliner ensures all-day comfort. Featuring a flat heel with a round toe shape, they are perfect for a medium-width fit.