Is it warm enough for winter?

It uses down and feather filling, which is the warmest common puffer insulation. It has no hood, so pair it with a hat or a hooded layer in wind and wet snow.

What is the shell made of?

A recycled nylon shell with a recycled polyester lining. Nylon resists wind and light rain better than plain polyester, but it is not a waterproof shell.

A zip at the front with buttons over it. The buttons add a second layer of closure and a cleaner look than a bare zip.

No. The jacket has a stand collar and an embroidered logo on the chest, with no hood attached.

How should I care for a down jacket?

Wash it sparingly in a front-loading machine with a down-specific detergent, then tumble dry low with dryer balls until fully dry. Never dry-clean down filling.

How does it compare with technical puffers?

It is a lifestyle puffer: recycled fabrics, down fill and New Balance branding. Technical rivals add hoods, water-resistant shells and stated fill weights, which this one does not list.