Super safe, super strong, super toughened these Perfect Pint Activator Performance Glasses are designed for optimum strength and breakage so that when it does finally shatter it will break into roughly twice as many pieces as standard fully toughened glassware, fragments so small it is impossible to cause serious lacerations. The Perfect Pint is available with nucleation. Nucleation involves the etching of the base of the glass and is designed to increase the effervescence of the drink and maintain the head of the drink, as well as improving the appearance of beverages when served.