This amber colored boston round glass bottle is perfect for keeping your precious essential oil blends safe by storing your cosmetics, herbal extracts, essential oils, and so much more. Designed to withstand certain levels of UV contamination, thus being the ideal storage solution for light sensitive compounds.  Cap off any of your bottles with this black disc top, which allows you to dispense any of your essential oil blends or carrier oils on-the-go. You can put these tops on glass or plastic bottles with a 20 mm threading. Also available in Blue Glass and 2 oz Amber Glass. Replacement caps can be purchased here. Details Content: (1) Amber Glass Bottle w/ (1) Black Disc Top Volume: 1 oz (30 ml) Neck Size: 20-400 (20 mm) Dimensions (no cap): 3.11 in (H) x 1.22 in (D) Recommended Label: 1.50 in (H) x 3.54 in (W) Instructions: Fill using a glass dropper with your favorite essential oils or essential oil blends, cap off, and store until needed!