Mark I shoulder pads are designed for Quarterbacks and Wide Receivers. Sizes available are Small – XXLarge. Our Barnett Mark Elite shoulder pads are constructed of light prop nylon, PVC, & shock – resistant density AC breathable padding, to provide excellent absorption of trauma. The breathable padding is treated with anti-microbial protection. Sizing Small: Height: 5.2 - 5.75 ft Weight: 120-145 lbs Shoulder Width: 16" - 17" Chest Size: 34" - 36" M Height: 5.2 – 6.10 ft Weight: 135-160 lbs Shoulder Width: 17" - 18" Chest Size: 38" - 40" L Height: 5.4 – 6.2 ft Weight: 155-180 lbs Shoulder Width: 18" - 19" Chest Size: 42" - 44" XL Height: 5.6 – 6.2 ft Weight: 175-200 lbs Shoulder Width: 19" - 20" Chest Size: 46" - 48" 2XL Height: 5.75 – 6.4 ft Weight: 195-220 lbs Shoulder Width: 20" - 21" Chest Size: 48" - 50"