3 to 14 Years

If you're referring to products designed for children aged 3 to 14, please specify the product category (toys, clothing, electronics, etc.) to get more specific details.
If you're looking for dimensions or measurements related to products for this age group, please clarify the product type (furniture, car seats, etc.).
There might be other specific meanings depending on the context. Please provide more details about what you're looking for.