MEDICAL GRADE MATERIALThe bottle body is made of medical grade PE material. It has high hardn,the surface is fine and smooth,non- and tastel,it is healthy and environmentally friendly. ROLLER BALL DESIGNIn order to avoid pouring out a lot of liquid at one time,we have added a ball design,and the balls also have a massa effect,so that the liquid can be slowly oozing out . EASY TO CARRYThe bottle is lightweight and can hold 50ml of liquid,making it ideal for travel or putting it in your small handbag. IDEAL FORCan be used to hold ential oils,perfumes or other non-corrosive liquids. Material:PE.Size:approx 9.8*3.75cm;caliber:approx 2.8cm;acity:50ml Color:white Paa included:4Pcs 50mL White Plastic Empty Refillable Roll-on Bottle Material:PE.Size:approx 9.8*3.75cm;caliber:approx 2.8cm;acity:50ml Color:white Paa included:4Pcs 50mL White Plastic Empty Refillable Roll-on Bottle Removable roll-on for easy refills / twist off & refill Our roller ball bottles used to contain homemade deodorants,also can be used to paa ential oil blends for holistic healing & personal all natural fragrance.