Williams Sonoma x Billy Reid NWT Bitters Bottles, Set of 2. We collaborated with award-winning fashion designer Billy Reid to create barware that reflects the same attention to detail and craftmanship as his luxury menswear. Ideal for bitters, these bottles are made of mouth-blown cased glass that's etched with decorative detailing. Their silicone stoppers have copper-finished spouts for added luster. Set of 2. Crafted of mouth-blown cased glass etched with decorative detailing. Silicone stoppers are fitted with copper-finished zinc alloy spouts. Dishwasher safe. A Williams Sonoma exclusive. 2 3/4" diam., 4" high. 5-oz. cap.