Silver & Gray Ribbons are a symbol for Cortical Visual Impairment (CVI), Children with disabilities, Parkinson’s Disease, any diseases or disorders of the brain including strokes, elderly abuse, Diabetes, brain cancer, asthma and allergies, severe depression, bipolar disorder, schizophrenia, and anxiety disorders. If you have more "Gray Ribbon" causes to add to our list, please e-mail us:Sales@AwarenessProductsOnline.com.