Wore this under my shell on a windy ridge hike and stayed warm the whole way, then it stuffed right into its own pocket at lunch. For how light it feels, the down actually holds heat.
Ruby★★★★★
The thing I didn't expect to love: it stuffs into its own pocket and disappears into my daypack. Took it snowshoeing last weekend and stayed toasty without feeling bulky under my shell.
Claire★★★★☆
Wore this under a shell on a windy hike and stayed warm without feeling bulky. Packs down into its own pocket, which saved me space in my daypack. Only gripe is the hood fits a bit loose without a beanie underneath.