Flamestretch® Sock System (FR)

Donned primarily by cold-water rescue divers, the Flamestretch Sock System is designed to be worn under dry suits when warmth and FR protection is critical.

The Flamestretch® sock system is comprised of two socks. The inner sock liner by Darn Tough® Wool is low-profile, comfortable, provides excellent moisture management, and is warm when wet. The over-sock constructed with Massif Flamestretch fabric is highly breathable and traps heat to keep your feet warm in the harshest conditions.

Product Features:

• Full flame-resistant construction with proprietary Massif® fabric
• High warmth to weight ratio
• Warm when wet
• Excellent moisture management
• Design to work with Massif® Fire and Ice™ layering system
• All fabrics pass the stringent ASTM D6413-F2302 performance specification for flame resistance
• Authorized by the United States Coast Guard
• Available in Black