while the wind and vapor barrier add extra protection against the elements

they offer flexibility and ease of movement while maintaining an arc-rated

Bisley® Hi Vis FR Ripstop Insulated Parka with Navy Bottom - ANSI Class 3 Type R - 385M8387H Features:

Functional features include a full-zip closure with inner storm flap

Ironwear® High Visibility Short Sleeve Safety Shirt - ANSI Class 2 Type R - 7133 ARC Rating_ATPV 5 calories/cm² while the wind and vaporIronwear High Visibility Short Sleeve Safety Shirt ANSI Class 2 Type R 7133 Features Made from Ironwear Elastex: a 92% Polyester and 8% Spandex fabric Features snag and wrinkle resistance Coated with UPF 30+, protecting skin from harmful UVA UVB radiation Activates evaporative cooling technology when wet Promotes moisture wicking properties: absorbs sweat and transfers it to the shirts surface Provides lightweight and breathable use Includes Ironwear