Light blue polyester swim cap from HELLY HANSEN. - Brand: HELLY HANSEN - Color: Light Blue - Material: 86% Polyester, 15% Polyurethane - Model Name: HCJ92019 Thank you for looking. It has only been worn once, so I think you can wear it comfortably. The size is likely for ages 1-3. It might fit up to around 5 years old for children with smaller heads.