Marl gets overlooked because it looks simple, and that simplicity is exactly the point. A well made marl sweatshirt in the right weight sits in that part of the wardrobe that does the most actual work. Weekend mornings, a casual Friday where you still want to look like you thought about it, the layer that goes under a coat without adding visual noise. The problem is that most marl sweatshirts are either too thin to be worth wearing or too branded to be useful beyond the sofa. The ones we have picked here are neither. We have been specifically looking at fabric weight, how the collar holds its shape after a few washes, and whether the fit works tucked into trousers as well as worn loose over jeans. Grey marl is the obvious entry point but there is a case for navy and slate too. These are the ones that earn a permanent spot in the rotation.