>>2115291The waviness of the zipper of this jacket is because the jacket has shrunk after the last trip to the washing machine (the zipper, obviously, doesn't shrink and hence is forced to wave up and down) even though I made sure it was a 30°C cycle. It's hard to show it in a picture but trust me in person it's very noticeable, even the pockets are like that. Basically I've ruined a wool jacket, good job me.
It's still usable, but what did I do wrong? How do I prevent myself from damaging it any further?