Utopia's Grande tumblers are super toughened. This means that they are designed for optimum strength, durability and safety. When super toughened glass does finally break, it will break into roughly twice as many pieces as standard fully toughened glass. As well as being extra durable, these Grande tumblers also boast the added practicality of stackability. This makes them a great choice for any outlet where space is at a premium. Available in all key tumbler sizes, Grande is a practical and versatile tumbler range, ideal for a multitude of uses.