The Glenlivet 18 Year Old is a single malt Scotch whisky matured for a minimum of 18 years across first-fill American oak ex-bourbon barrels, second-fill American oak barrels, and first-fill Spanish Oloroso sherry butts. Unpeated. Chill-filtered. ABV varies by market (40% or 43%). Standard bottle sizes are 700ml, 750ml, or 1 liter depending on market.