All season motorcycle jacket reinforced with Kevlar Jacket includes a removable sealed-seam winter lining, which is totally waterproof Inside pockets accommodates elbow and shoulder CE EN 1621/1 armors DRI FIT summer layer for sweat management+ eight ventilation zippers Built in three parts Back armor panels How to choose your Size of jacket -our tip: Use your current jacket or dress shirt size as a guide line. For Example -if your jacket or dress shirt is XL choose XL as your Cool Mesh size .