Heavy gauge stainless steel, two-piece Boston Shaker from the collection Crafthouse by Fortessa designed by Charles Joly, World Champion Bartender Designed to seal tightly to avoid spills Timeless design features architectural foot giving a place to wrap your fingers around for a secure hold and creates a perfect balance Ribbed design improves grip; features 2-ounce, 4-ounce and 6-ounce volume measurements; measures 11-Inch by 3.5-Inch Dishwasher safe