Hair Doughnut: Enhance your hair styling with the help of this hair bun doughnut. Styling: Get the perfect bun every time! Size: All doughnuts have a depth of 2'', with a resting width of 3.5'', 4.5'', or 6''. Options: Choose your colour - Black, Dark Brown, or Blonde. Hair Bun Doughnut | Black | 2 INCH | Living Social