Reef Swellsole Neptune Mens Shoes. Your all day, every day, go anywhere shoe is here. Classic styling comes to the unmatched comfort and ease that is REEF’s hallmark. The SWELLsole Neptune takes you anywhere, from slipping on with the crush-back heel for morning coffee runs to go-with-everything styling for a casual night out. The breathable, flexible, engineered knit upper combines with our lightweight EVA bottom and classic REEF cushion insole to bring a seamless fit to your seamless versatility, seamlessly. Easy down heel. Lightweight. Squishy footbed. Lightweight, breathable stretch knit upper with easy on and easy off fold-down heel. Ridiculously comfortable Memory Foam Sockliner. Ultra-lightweight and flexible EVA outsole . Imported.