Irish Beer Mug - Clear Glass Beer Stein with Green Shamrock Design - St. Patrick's Day Mug SHAMROCK BEER MUG. This heavy duty beer mug is perfect for your St. Patrick's Day celebration. What a cool Irish accessory. The bright green shamrock is printed on both sides of the mug. ST PATRICKS DAY PARTY SUPPLY. Thick glass is durable and perfect for keeping your beer cold for extended periods of time. Stick in your freezer for 15 minutes before pouring for a frosted mug. IRISH GIFTS. Excellent Father's Day gift. Give to that special Irish beer lover in your life. Give to husband, boyfriend, Dad, Grandpa, Brother, Uncle or anyone who enjoys Irish beer. Use this mug to house a glass of stout, Irish whiskey or cocktail. IRISH BEER STEIN. What a great mug to show off your Celtic pride. Use it to hold your green beer on your pub crawl during the St. Paddy's Day holiday. STANDARD BEER MUG SIZE: 18oz. Hand Wash Only.