Amber Glass Bottles The roller bottles are made of corrosionresistant glassAmber glass protects your essential oils against harmful UV rays Stainless steel roller balls The roller ball material is high quanlity stainless steel which is corrosion resistantThe surface is very smoothIt will give you better experience Luxury Alloy Caps The cap outside is aluminum alloyGolden colour looks ritzyCaps and the roll balls are designed pressed when screw tightenedit can prevent any types of leakage Rich Accessories 12 labels for marking essential oils name on bottles 3 droppers and 1 funnels for filling essential oils into bottles conveniently 1 bottle opener for removing roller ball from bottle 1 brush for cleaning roller bottles insde easily and reuse them Portability the capacity10ml allows you to store essential oilsperfume or other liquids meet your daily care for eyesfaces and bodyIts perfect for traveling and it easily fits in your purse