One of our best sellers, Oat Dot mixes simplicity with modern sweetness with its small black polka dots set against a light oatmeal-colored background. * Made with 100% certified organic cotton knit fabric, each bandana has a cozy and luxurious feel along with a bit of stretch. * The double-sided bandanas are medium-weight. * The pigment colorants in each print do not contain harmful chemicals and are created using a sustainable digital printing process. Archie is wearing a size medium and Odie is wearing a size small. SIZES: To determine the best size bandana for your dog, measure around the widest point of the neck. Add approximately 4-5 inches for a knot.