BonJour Coffee Insulated Borosilicate Glass Latte Glasses, 2-Piece Set, 12-Ounces Each Durable and lightweight hand-blown borosilicate glass-cup; 12-ounce capacity Double wall insulated construction keeps beverages deliciously warm or cool; won't burn fingers or leave rings on your table Large latte-cups are perfect for a creamy cappuccino, a hot mocha, or a classic root beer Sleek and modern with minimalist styling; creates a unique and elegant "floating" presentation