Very good quality material and well made. Sleeves come off really easily while running, I didn't even had to slow or change my stride it's that easy. Same getting sleeves on, magnets just seem to know where to go. The only minor issue is the under arm magnet comes loose if you raise your arms above shoulder height for any reason (shouldn't need to during normal running). Great fit as sleeves are on the long side which is great for tall people. Not overly long in body but fits nicely. Excellent jacket that I would highly recommend.
I love this jacket. Nice light jacket offering wind protection, as the day warm up the sleeves slip off and get put in the back pocket leaving me in a confortable gilet. Fit was spot on, I'm a small and to compare I typically buy size small clothes from H&M and top shop, this jacket size is similar. (As opposed to a M&S small which is always to big for me).
Purchased this jacket after many hours of research and it proved to be an excellent choice. Gives great movement and is well ventilated with the sleeves on. The sleeves are very easily removed even whilst running and stow in the rear pocket. Highly recommended.