Bulwark Men's Flame Resistant 45 oz Nomex IIIA Sleeved Jacket Liner with Slash-Welted Pockets Shell: 93% Nomex Aramid/5% Kevlar Aramid/2% Other Fiber; Lining: 100% Meta-Aramid; Insulation Package: 90% Aramid/10% Rayon Made in the USA or Imported Four concealed snap, front fly closures Heavy rib knit cuffs and collar One inside left chest pocket, no outside pockets Snaps into brown duck lined bomber jacket, lined bomber jackets Arc rating EBT 37.0 calories/sq cm