• Beautiful, light resistant cobalt blue • 7 convenient sizes with large label area • Reversible lids. One side is child resistant and the other is screw on and off. • Meet USP "light and tight" requirements • Veterinarians frequently use blue vials so clients can easily differentiate between human and pet meds • Savings of 40% over comparable product • These vials are so beautiful - You'll want to make them into earrings, bracelets and necklaces!