The Riedel O Wine Key to Wine - Red Wine Set, 3-pack, is the perfect glass set for those looking to explore wine tasting at home. The set includes three wine glasses specifically designed for pinot noir, syrah, and cabernet/merlot. The idea is to taste the same wine in different glasses to experience how the shape of the bowl influences the wine’s taste and aroma. The packaging includes a QR code leading to an instructional video to guide you through the tasting. The Riedel The O Wine Tumbler series is known for its grape-specific bowls without stems, making the glasses more durable and easy to transport.