Is the Spere warm enough for below-freezing weather?

It handles cold, dry winter days and wet weather well thanks to the synthetic fill and Gore-Tex shell. For deep cold or long periods standing still, most people add a midlayer underneath.

How does it compare with a down jacket?

The synthetic fill stays warm when wet and needs less care, but it is bulkier and heavier than down at the same warmth. Down packs smaller; the Spere shrugs off rain better.

Is it waterproof or just water resistant?

The Gore-Tex membrane makes it waterproof and windproof, with sealed construction. It is built for rain and snow, not just light drizzle.

What sizes does it come in?

It is offered in men's sizes from XS through XXL. Arc'teryx runs a trim athletic fit, so check the size chart if you plan to layer.

Can I wear it for skiing or hiking?

It works for lift-served skiing and casual winter walks. For high-output activity, many prefer a lighter shell with a separate fleece or down midlayer for better venting.