The Picnic Time growler's amber translucent glass offers the UV protection of a traditional bottle but with modern portability that's ideal for fresh craft beer. This amber glass beer growler is the perfect storage container for your favorite home or store-bought brew, and not just because it looks great. Amber glass protects its contents from UV rays that can damage the alpha-acids in hops - which gives beer that unwanted skunky smell. This glass growler has an integrated handle and white screw top cap for secure closure. See? Science IS fun!