The name tells you where to start. Nylon Metal is the fabric, 100% polyamide, and it is the reason this overshirt exists at all. Massimo Osti built Stone Island on the idea that the material decides the design, and that holds here. The cotton lining is what makes it wearable, putting something soft between you and the nylon.
So it works as a layer over a shirt or a light knit, in green that reads differently depending on the light. The full zip replaces buttons, which keeps the front clean and lets you close it properly. One chest pocket. The compass badge sits on two press studs on the left sleeve, so you can take it off. Regular fit, cut a little closer than high street sizing.
