450D nylon stretch chassis with 300d polyester internal reinforcements ICON« Sport Fit Pre-curved arms, waist adjusters, and increased airflow through AirFlyÖ center front mesh panel Removable insulated vest liner Zippered vents at the shoulders, cuffs, and back Elbow and shoulder LP1 impact protectors D30« removable viper back protector. JKT SLABTOWN CE GN LG