The Fallblock Flannel Jacket looks ultra-casual but has all the hallmarks of a motorcycle jacket Cotton nylon flannel with internal 300D polyester reinforcements in elbows and shoulders Premium YKK® zippers Fully insulated body Large pit zipper vents D30® Removable Viper back protector; elbow and shoulder Ghost impact protectors Men’s Jacket Size Chart Size UK Size EU Size A. Chest B. Sleeve D3O Viper Size Inches Centimeters Inches Centimeters XS 36 40 - 44 33” - 35” 84 - 90 34” 85 M S 38 44 - 48 35” - 37” 90 - 96 34” 87 M M 40 48 - 52 37” - 41” 96 - 104 34.5” 88 M L 42 / 44 52 - 56 41” - 44” 104 - 112 35” 89 M XL 44 / 46 56 - 62 44” - 48” 112 - 124 35.5” 90 L 2XL 48 62 - 68 48” - 53” 124 - 136 36” 92 L 3XL 50 68 - 74 53” - 58” 136 - 148 36” 92 L 4XL 54 74 - 80 58” - 63” 148 - 160 36.5” 93 L Jacket Size Styles Fit Attack Sport Relaxed Chest Tailored Body Straight Body Straight Body Sleeves Precurved Arms Articulated Arms Straight Arms How to Measure for Fitment A. Chest While standing with your arms relaxed at your side, wrap a flexible tape measure around your chest at its largest point. The tape measure should go through your armpit and stay parallel with the floor while taking the measurement. B. Sleeve While standing with your arms relaxed at your side, place one end of a flexible tape measure on your spine at the base of your neck. Measure over the top of your shoulder, down over the point of your elbow, and finish at the wrist bone. There are three variables to consider when sizing an Icon jacket. The first two are the chest and sleeve measurements, which are what your jacket size is based on. The third is the jacket fit type, which defines the “cut” of the jacket (Attack, Sport, or Relaxed). Sizing information is provided by the manufacturer and does not guarantee a perfect fit.Please use this chart as a guide only.