13-ounce INDURA Ultra Soft duck, a blend of 88% cotton and 12% high tenacity nylon, which provides superior abrasion resistance and offers increased comfort and durability. 10-ounce Moda-Quilt lining: FR Modacrylic batting quilted to INDURA Ultra Soft twill face cloth provides warmth without the bulk. High back with FR elastic suspenders and high temperature nylon center-release buckles. Large bib pocket for storage with FR hook and loop closure. Chap style double front for durability and increased thermal performance. Many other features.