Arns produces Cabernet Sauvignon and Syrah from St. Helena, a region in Napa Valley known for structured red wines with depth and aging potential. The Estate Grown Cabernet Sauvignon represents the winery's core expression of the varietal, while Impromp 22 Cabernet Sauvignon offers a secondary interpretation of the same grape. Both wines have been assessed by major critics including Wine Enthusiast, Wine Advocate, Decanter, and Wine Spectator. The winery also makes Syrah, exploring the darker, spice-forward character that Syrah brings to the region's portfolio. St. Helena's volcanic soils and warm days with cool nights create conditions suited to full-bodied reds with ripe fruit and firm tannin structure.