Bordeaux-style glasses are designed for Cabernet Sauvignon based wines but are also perfect for big, tannic wines offering lots of spice, ripe fruit and nuances. The large 23 oz. bowl gives proper room for the bouquet to develop layers of aroma given more empty space in the glass. The narrow opening concentrates these aromas towards your nose. The thin rim directs the wine towards the front of the tongue, allowing jammy, fruity flavors to dominate before the flavors of tannins are directed towards the back of the tongue.