Full-on Battle ready Flat Ring Rivet chain mail makes this coif practically indestructible. The ring type alternates between a row of solid rings and a row of riveted rings for absolute durability. Each ring is made of steel and about 14mm thick. The coif fits adult sizes and protects the head, neck, and parts of the face. Chain mail is meant to be worn under a compressed cotton padded coif, available in our store. This coif offers the best in flexible protection. Can be worn underneath a helmet or just on a cotton padded coif. Overall Length: 20 Inches. Face Opening: 7 Inches. Construction: Stainless Steel, Flat Ring Rivet. Chain Link Diameter: 9 mm. Chain Link Pattern: 4 in 1 Interlocking. Fitment: Adult Sizes. Color: Black.