while the high resistance thread and bar-tacked stress points provide extra durability

NRR (Noise Reduction Rating) = 25 dB

Inside left & right chest pockets with hook & loop

It is made from 100% cotton for superior breathability and comfort

Portwest® Men-s Flame Resistant IFR Basewear Bottom - Gray - IMP710 Color_Yellow Black while the high resistance threadProduct Features Inherently flame resistant and guaranteed for the life of the garment Medium weight, form fitting stretch comfort, very soft fabric with smooth flatlock seams STANDARDS IFR BaseWear fabric meets the requirements of: NFPA 2112, NFPA 70E Shell Fabric : 45% Modacrylic, 45% Rayon, 10% Para Aramid 6. 5oz View Additional Shell Fabric Info : 6. 75oz 229gm Click here to See Product Specifications Product Standards NFPA 2112 NFPA 70E Product