This GRAMICCI TAION hat is made with lightweight 95% down fill with a fill power of 800. The front brim has a flexible wire, allowing you to freely change its shape. It's very warm and provides excellent insulation. - Brand: GRAMICCI - Model Name: TAION - Material: 95% Down, Fill Power 800 - Features: Lightweight Head circumference: 59cm Depth: 12cm Brim length: 6cm Please note that these measurements are approximate due to being taken by a non-professional, and slight variations may occur. Thank you for looking.