Is the R0 Hoody warm enough on its own?

It is a light layer, best for cool active days or under a shell. In cold, static conditions it adds little warmth.

It has a trim, athletic cut. Buyers who want room to layer underneath often size up.

Can I wear it as a base layer?

Yes. Its low bulk and stretch make it a good base layer under a shell or fleece.

The hood is low-profile and generally fits under a climbing or ski helmet, though some find it snug.

Running, climbing and cool-weather hiking, where breathability matters more than insulation.

It is lighter and more breathable than most grid fleeces, but less warm when you stop moving.

At rei.com, for $41.83, 51% under what the other stores charge, as of our latest check.

Rated 4.2 out of 5 from 107 ratings.

3 stores we checked sell it, including Backcountry, Patagonia, rei.com.

$41.83at rei.comChecked 7 h ago

51% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.