Redman XP Training Padded Helmet Work Boots The top mounted dual switches 511 48379ABR 724 3XL The top mounted dual switches provide high low brightness spotlight for distance illumination and white red green floodlight operation for illuminating objects that are close by which is why we upgraded the original to the new Flex Radio Pouch 2 Helmet Only Body Size Height Weight Head Size Circumference Hat Size S M Body Up to 5'10" Up to 180 lbs Medium 21" 22" 6 7 8 7 1 4 S M Body Up to 5'10" Up to 180 lbs Large 22 1 2" – 23" 7 1 4 – 7 5 8 L XL Body Over 5'10" Over 180 lbs Medium 21" 22"" 6 7 8 7 1 4 L XL Body Over 5'10" Over 180 lbs Large 22 1 2" – 23" 7 1 4 – 7 5 8 L XL Body Over 5'10" Over 180 lbs X Large 23 1 2" – 24" 7 1 2 – 7 ¾