Is the MAXSON Women's Softshell Jacket fully waterproof?

It uses a three-layer waterproof, breathable membrane, so it is built to shed rain while letting sweat vapor escape. Seams and zips are not described as taped or sealed, so treat it as weather protection for rain and wind rather than a downpour shell.

How does it fit compared with a standard softshell?

It is cut closer: shaped seams, a tapered waist, ergonomic sleeves and articulated elbows follow the body rather than hanging boxy. The dropped back hem adds coverage when you bend or reach.

No hood is described. Plan on a hat or a separate hooded layer for head coverage in rain.

Can I wear it over the Stinson Softshell Vest?

Yes. It is made from the same comfy material as the Stinson Softshell Vest, so the two are designed to work together as a layering system.

Is it warm on its own?

It is a shell, not an insulated jacket. The three-layer membrane blocks wind and rain, but warmth comes from what you wear underneath, such as a fleece or the Stinson vest.