Grant's blended whiskies are made using grain whisky from the Girvan distillery as a base, blended with a variety of single malts and other grain whiskies. The full range includes the Family Reserve, Ale Cask, Sherry Cask, 12, 18 & 25 Year Old. The distillery at Girvan produces a light grain whisky that allows the character and sweetness of the malt whiskies to come through into the final blend.

Grant's is sold in a bottle that has a triangular cross section starting from 1957. The designer Hans Schleger came to Britain as a refugee from Nazi Germany. He was asked to create a distinctive, elegant bottle that would showcase the quality and colour of the whisky as well being able to be stacked and packed efficiently. The triangular-shaped bottle was first used in 1956 for Glenfiddich Single Malt Scotch, also owned by William Grant & Sons.

In 2002, the Grant's bottle and label were both updated. This included embossing the bottle with the Grant coat of arms and the motto "Stand Fast" – the war cry of Clan Grant, to which William belonged. The words "Est. 1887" and "Independent Family Distillers for Five Generations" were also added.