Is the Superalloy Bio good for heavy rain?

Yes. Its 20,000 mm rating is in the range of serious mountain shells, and owners report staying dry in sustained rain. Pair it with pit zips open on climbs to manage sweat.

How does it compare with a 3-layer Gore-Tex shell?

It is lighter and more packable, but a 3-layer shell is more breathable and more abrasion-resistant. Choose this for hiking and travel; choose 3-layer for alpine or daily abuse.

Does it run true to size?

It runs loose and straight, so most buyers can take their normal size and still layer a fleece underneath. Slim builds may want to size down.

Does it have pit zips?

Yes, underarm vents let you dump heat without opening the front zip. That matters because the 2.5-layer membrane is not highly breathable.

Yes. It rolls or stuffs small enough for a daypack side pocket, which is one of its main advantages over heavier shells.

Recycled polyester and nylon with a 2.5-layer membrane and a mesh lining. Wash at 30 degrees and avoid fabric softener to keep the water repellent finish working.