Based on the search results, there is no information about "baby synesthesia product details, positive, negative, ingredients or materials." However, we can provide some information about synesthesia and baby diapers.

• Synesthesia is a neurological condition in which information meant to stimulate one of your senses stimulates several of your senses. People who have synesthesia are called synesthetes. They can often “see” music as colors when they hear it, and “taste” textures like “round” or “pointy” when they eat foods.
• Baby diapers are made up of several components, including an absorbent pad made of sodium polyacrylate, a nonwoven fabric such as nylon, elastic bands, and adhesive strips. Sodium polyacrylate is a long and curly shaped molecule that is positively and negatively charged, making it very attracted to water. It is responsible for absorbing and retaining moisture in the diaper.