Designed in Seattle for RSVP, one of our favorite gadget suppliers. Heavy duty stainless steel. 6 nested cups, from 1/4 cup - 1cup. Dishwasher Safe. Classy and ready to work...for a lifetime! That makes them contenders for a wedding gift. It's not easy to select an item that will remind the receiver of the giver for a half-century, through good times and bad, thick and thin, wonderful and wobbly,but your search can end right here!