Is this warm enough as a standalone layer?

For cool-weather activity, yes. In real cold it works best under a shell or as a midlayer, since the fleece is not windproof.

How does it compare with a Patagonia R1-style grid fleece?

It uses the same grid-fleece idea at a lower build quality. Expect similar warmth and breathability, with less refined fabric and finishing.

It runs somewhat roomy. If you want a close base-layer fit, consider sizing down; size up only if you plan to wear it over a shirt.

Yes. The quarter zip and high collar vent heat well during high-output activity, and the polyester moves sweat away.

One quarter-zip fleece top. Nothing else is included.

Machine wash cold and tumble dry low. Avoid fabric softener, which coats the fibers and reduces wicking.

At Academy Sports, for $34.99, as of our latest check.

$34.99at Academy SportsChecked Nov 10

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

It checks today's price at every store, compares the alternatives and answers in about a minute.