Bought this jacket for summer weather in Orlando, Fl. i usually wear a Dainese leather jacket(size 48) with plenty of perforation, but its still a little too warm for the Summer. This jacket fit perfect in the waist and length, but the arms were way too long and baggy(almost at the mid level of my palms). Im 5"10 at 155 lbs and purchased a medium. I might just have short arms? Looks cool with all the sponsors on it, but I will be returning this for something that fits more snug and is also breathable.