Is the UltraLight Mat warm enough for three-season camping?

Yes for spring through fall. Its 2.6 R-value handles mild nights, but it is not a winter pad; add a closed-cell layer for cold ground.

How does it compare with an air-only inflatable pad?

It is heavier and packs larger but resists punctures and needs almost no breath to inflate. Air pads are lighter and thicker but more fragile.

Often not on its own. At about 1 inch thick it bottoms out under hips; side sleepers usually pair it with a thicker pad or a closed-cell layer.

The mat, a stuff sack, a larger storage sack and a repair kit.

Most of the inflation happens on its own within a few minutes; a couple of breaths firm it up fully.

It rolls to about 11 x 5 inches, small enough to strap to the outside of a pack.

At AlpinStore, for $57.74, 18% under what the other stores charge, as of our latest check.

Rated 5 out of 5 from 207 ratings.

11 stores we checked sell it, including eBay, Scandinavian Outdoor, Dick's Sporting Goods, AlpinStore, 遠野倉庫 Yuenye Warehouse.

$57.74at AlpinStoreObserved at 9:34 AM

18% under what the other stores charge

Compared across 11 stores. Prices are checked against each store and labelled with when.