The Airstream is a good-value thermal mid-layer, providing comfortable insulation with windproof front, side and arm panels. This makes it a little bulkier and less fitted than some tops, and the arms are more generously cut.
The thermal fabric used to line the inside feels soft and warm. Up top is a small yet usable zip to increase ventilation if you get too warm, and there’s a baffle behind it to stop any draughts. There are the standard three pockets on the back, with the outer ones angled for easy access. There’s no zip stash pocket though.
Relective piping and logo make you a little more visible on the bike. All this makes for a great, warm windproof jersey/ jacket-style top if you don’t mind a little added bulk.