XUEMEI Superior Quality --- Our glass roller bottles are made of high quality frosted colorful glass, refillable and durable. 7 Pack, 10ml roller bottles set. Stainless Steel Roller Balls --- On the top of glass bottle is stainless steel roller balls to make dispensing the oils easy, clean and controlled. Our balls glide smoothly onto skin, which provides an easy, no mess application. These are made of stainless steel, which is corrosion resistant and well-made. Safety & Leak Proof Design --- The colorful glass roller bottles protects against harmful UV rays to save it from quick volatilization. Besides, the tight fitting lids can prevent any large amounts of oil come out and achieve a leakage proof function. Portability --- Essential oils roller bottles are suitable for storing your favorite massage oils, perfumes, aroma fragrance perfumes, hydrosols, essences and other liquids and put them in your bag or purse. Its very great for traveling. Specification: Material: glass, stainless steel, aluminum alloy Capacity: 10ml Color: light blue, blue, orange, green, red, yellow, purple Quantity: 7 pieces Package Include: 7 x 10ml glass roller bottles (light blue, blue, orange, green, red, yellow, purple)