Size: XL 45\" - 48\" (sleeve length 34 3/4\")

From the manufacturer:

The Flamestretch® 1/4 Zip Pullover is Massif\'s warmest layering option. Designed to be an insulating layer worn over Coolknit™ and/or HotJohns® garments. Flamestretch fabric is highly breathable while trapping heat to keep you warm and comfortable.

Constructed with DuPont™ Nomex® brand fiber, the first flame-resistant fiber selected for use in military uniforms. Nomex fibers carbonize and thicken when exposed to intense heat of a flash fire, creating a protective barrier that reduces or prevents burn injuries. When operating in cold conditions, Flamestretch Pullover is the ideal choice.

Features:

• 4-way stretch
• Moisture-wicking fabric
• Excellent moisture management for multi-season use
• Long sleeves protect wrists, even when reaching
• New higher crew collar provides more protection and warmth
• Wear as a stand-alone garment in warmer conditions
• Machine washable
• Part of the Massif Fire and Ice Layering System

• USAF Authorized Safe-To-Fly
• Approved by NAVAIR
• Authorized by the United States Coast Guard
• All fabrics pass the stringent ASTM D6413/F2302 performance specification for flame resistance.