The robe style has been incredibly popular for a while now. It usually features minimal hardware and a simple, belted closure. Because of the lack of complexity in styles like this, I’d suggest focusing on the weight of the material—too thin, and it won’t do much good against single-digit temperatures. I’d also look at the purity of the fabric, with a focus on 100% natural wool. COS has brought this out in the most gorgeous, rust-toned beige as well as classic black.
It is composed of a mix of wool and lyocell. Lyocell is a relatively new innovation of manufacturing viscose (a semi-synthetic made of wood pulp) in a more circular way. This means that creating this fibre involves recycling almost all of the chemicals used and sourcing its cellulose from renewable forests, to avoid desertification and polluting the environment. On the plus side, it is a more affordable option for those looking for a timeless coat, but the only consideration is that the lower percentage of wool means that this is very much a transitional piece and won’t be suitable for truly cold winter weather.