MCR Safety Carbon Hero


Summit Freeze®
Flame Resistant (FR) Insulated Bomber Jacket
100% FR Duck Cotton Outer
Quilted Modacrylic Insulation

Quilted modacrylic material adds Additional FR Protection and Additional Warmth


Many outdoor jobs require workers to wear Flame Resistant Clothing in cold conditions. The B4T Insulated Bomber Jacket features a comfortable and rugged 100% FR cotton duck outer material for rough applications and a quilted modacrylic lining for added warmth and FR protection. This jacket offers 34.8 cal/cm2 of protection and carries MCR Safety’s lifetime FR guarantee.  See MCR Safety’s other Flame-Resistant clothing options here.

Available in Regular Medium - X5 and Tall L - X5

  • Insulated flame-resistant bomber jacket
  • 34.8 cal/cm2  / CAT 3
  • ASTM 1930, ASTM F1506, and NFPA 70E Cert
  • 11 oz. 100% FR duck cotton outer
  • 10 oz. quilted modacrylic FR liner
  • Bi-Swing action back for comfort
  • Zipper front covered by storm flap
  • Over-sized zipper pull for ease of use with gloves
  • No exposed metal
  • 2 Insulated hand warmer pockets over flap pockets, 4 total outer pockets
  • 1 Inside left pocket
  • Elastic bottom for fit and to help keep jacket from riding up
  • Materials used certified to NFPA 2112
Size Sizing Type Part No.
M Regular B4TM
L Regular B4TL
L Tall B4TLT
XL Regular B4TXL
X2 Regular B4TX2
X2 Tall B4TX2T
X3 Regular B4TX3
X3 Tall B4TX3T
X4 Regular B4TX4
X4 Tall B4TX4T
X5 Regular B4TX5
X5 Tall B4TX5T

Hazard Risk Category

CAT Rating 3 (CAT3) - Minimum Arc Rating of 25.0 cal/cm2

NFPA 70E-2018 Certified.

Standard for Electrical Safety in the Workplace®.

NFPA 2112-2018 Certified.

Standard on Flame-Resistant Clothing for Protection of Industrial Personnel Against Short-Duration Thermal Exposures from Fire.

Technical Specifications

Flame Resistant
NFPA 70E-2018 Certified.
ASTM F1506 Cert.
ASTM 1930 Cert.
NFPA 2112-2018 Certified.
Case Pack
Case Dimensions
18.110 x 17.717 x 19.291
Case Weight
25.608 lb.
Weight Each

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