Made of high quality thich corrosionresistant glass materialwhich is not easy to leakingscratchesor breaking Environmental bamboo lids can avoid oxygen to hit the inner mass It can also stop volatilization of the Volatile components and With the Bamboo cap which is Environmental and Shockproofcan Protect your Essential Oil well Capacity10mlbottle sizeapprox 85mm20mm20mmperfect for traveland conveniently fits in your pursepocketbag etc These roller ball bottles can be used to storing essential oil blendsaromatherapyessenceperfume oilCosmeticsliquidsmixes and so on Rollers are made of Stainless steel which is corrosion resistant The tightness can prevent any sort of leakagewith our bottle openercan easily be disassembled and filled