This three-piece set of hanging car air freshener bottles features a cube-shaped black glass design for a sleek, understated look. Each bottle is empty and includes a wooden cap, an inner plug, and a hanging rope, so you can fill it with perfume, essential oil, or air freshener liquid of your choice. The bottles measure approximately 1.83 x 1.02 inches, making them lightweight and portable, and the adjustable rope allows you to hang them in a car, bedroom, office, kitchen, bathroom, or wardrobe. The cube shape and black glass give the product a modern decorative appearance, while the wooden cap is intended to absorb and release fragrance gradually. To use, add fragrance to the bottle, shake gently to saturate the cap, and hang the bottle in the desired location. Because the bottles are empty, essential oils and perfume are not included. This set is suitable for people who want a reusable, refillable hanging diffuser with a simple, elegant design. The glass should be handled carefully, and the bottle should be hung securely to avoid breakage or interference with driving visibility.