Premium Quality: These 310ml old-fashioned rocks tumblers are made from lead-free crystal, offering a safe and luxurious drinking experience for your favorite whiskey, bourbon, scotch, cognac, or brandy. Timeless Design: Featuring a stylish and classic design, these transparent whiskey glasses add a touch of elegance to any home bar or collection, perfect for both casual and formal settings. Perfect for Cocktails: Ideal for serving a variety of cocktails, these versatile tumblers are perfect for everything from neat whiskey to sophisticated mixed drinks. Durable and Sturdy: Designed for long-lasting use, these tumblers are crafted with thick, durable glass that provides excellent clarity and is resistant to breakage.