How fun are these Fine Line Mini Custom Hair Brush? They are a Baublebar bestseller and the perfect on-the-go accessory. Its petite size and durable finish make it ideal for throwing in a purse, carry-on, beach bag, or car. Add your name, initials, or a favorite phrase to make it 100% yours. The letters on the Fine Line Mini Custom Hair Brush are crafted with a chic outline treatment, offering elegant negative space in between your personalization.