Perfect for your kitchen or bathroom, the Westport Foaming Soap Pumpby Interdesign reduces soap usage and is more environmentally friendly, economic and efficient. To fill, add 1 part soap to 5 parts water for a total of 18.7 Fluid oz. of product. It's wide opening makes for an easy refill. It's satin pump head unscrews from the ring with a clear glass base and adds style to any room.