The product is a set of 5 refillable perfume essential oil diffusers in glass bottles, suitable for use in cars. These empty glass bottles are designed for easy refilling with your favourite essential oils, providing a convenient and stylish way to freshen up your car's scent. The diffusers are compatible with the Glade 324768 model and are perfect for adding a personal touch to your driving experience. Made from high-quality glass, these bottles are a practical and elegant addition to your car's ventilation system.