Features 1.1. Easy to use, smooth rolling ball for easy even oil application and prevents oil from falling out. 2. 2. Made of thick durable plastic with professional design to prevent the oils or perfumes from leaking to your wallet, luggage or bag. 3. 3.The roller bottles made of thick PE with smooth ball, suit for aromatherapy, perfumes, lip balms and other liquid. 4. 4.The roller bottles give you a comfortable feeling and high-grade look. The bottles can be used to package essential oil blends for holistic healing and personal all natural fragrance. 5. 5. The 50 ml convenient bag size meets daily needs and makes it easy to carry your perfumes and oils while traveling. Specification Size: 3.8*10.5cm Weight: about 15g/piece Color: White Capacity: 50ml/piece Package List Roller bottles*10