In these sketches I am looking at the movement function of the jacket. I found that the areas that need the most movement are the arms, which need to be able to move backwards and forwards and bend with ease, making climbing steep stairs and hills more comfortable.

I first looked at using pleats and fullness in the elbow and sleeve head areas in ways that would allow the jacket to expand and contract when needed.

I then moved on to the idea of having stretch inserts in the jacket, allowing for movement, without having to change the entire silhouette of the garment. I also considered having stretch inserts in the back seams of the garment, to put a bit of give accross the back, however I think that the stretch in the armholes would make this unnecessary.