Capacity: 1 oz inner chamber and 2.75 oz outer chamber. These shot cups are designed for use as drinkware in a variety of social settings. The cups are hand washable and can be reused or disposed of after use for easy cleanup. Made from soft, flexible plastic, they are more durable and less prone to breakage than rigid plastic cups. Ideal for glow parties, weddings, buffets, catering events, bars, birthdays, holidays, festivals, girls' night out, or any event featuring ultraviolet blacklight lighting. Perfect for serving layered shots or creative cocktail recipes using spirits such as vodka, whiskey, rum, or schnapps. The neon-colored design enhances visibility under blacklight for a vibrant party experience. We stand behind the quality of our shot cups. If you are not completely satisfied, please reach out for assistance. When purchasing, please review the product dimensions and specifications to ensure suitability for your needs. For any questions or concerns, feel free to contact the seller through Amazon messaging. Thank you for choosing this product—we hope you enjoy it.