The empty spray bottles are made of durable thick glass, sturdy and durable. The matching cap is leak-proof, you will never worry about perfume evaporating or leaking over time. The refillable perfume atomizers are great for storing your products such as perfume, skincare, fragrances, essential oil, aromatherapy, face spray, aftershave, etc. The glass spray bottles can hold 30ml of perfume each bottle will be enough for your customers to have a short trip, so they are portable and easy to put in your purse, pocket, backpack, or handbag.