Product InformationMaterial: Glass Capacity: 100ml Total height: 72mm/2.83inch Open mouth diameter: 16mm/0.63inch Container bottom diameter: 20mm/0.79inchProduct descriptionSnap in the roller-ball by gently placing the roller-ball in the bottle and then firmly tighten the cap until the roller-ball snaps in. Use the roll-on bottle to apply the perfect amount of product each time. Remove the roller-ball by applying pressure with the cap. Its packaging is very safe, reliable and convenient, very suitable for travel, and can be conveniently placed in your wallet.