Anti-fog gel for eyeglasses, 100g, ideal for use with masks. - Contents: 100g - Type: Gel - Purpose: Eyeglass anti-fog - Usage: Effective when wearing a mask Thank you for looking. This product is a set of two. My glasses fog up every year, so I stock up, but I started wearing contact lenses last year and stopped wearing glasses, so I'm selling them. It's been a while since I purchased them, but they are unopened.