MADE OF FOOD GRADE 18/8 STAINLESS STEEL, THIS IS A GIANT LEAP FORWARD FOR CRAFT BEER LOVERS WHO'VE GROWN WEARY OF HASSLING WITH TRADITIONAL GLASS GROWLERS. A PASSIVATED INTERIOR IS MEANT TO KEEP 64 OUNCES OF MALTY GOODNESS OR WELL-HOPPED HEAVEN TASTING JUST THE WAY THE BREWER INTENDED. AN ATTACHED SWING TOP OFFERS LONG-LASTING FRESHNESS AND ENSURES YOU'RE GIVING YOUR BEER THE TENDER LOVING CARE IT DESERVES. THIS IS AN IDEAL GIFT ANY BEER LOVER WOULD APPRECIATE. HAND WASH ONLY, DO NOT FREEZE.