Review: Primal Iero 2 Short Sleeved Base Layer

A good quality base layer can transform the way your cycling clothing feels and performs. A high quality jersey with a low quality base layer is in some respects a lost benefit. The Iero 2 Mesh Base Layer from Primal is one of the best base layers I have tested though; and its technical make-up, styling and fit are second to none.

Some may query why I am posting a review of a high wicking, extremely breathable base layer in the middle of December. Surely I should be talking thermal base layers? My reasoning is this; if you have an extremely insulated winter jacket such as the Primal Paradigm (reviewed here), then you will likely find that in more mild temperatures (5-10 degrees Celsius) you only want a base layer underneath, and that a highly wicking base layer is actually ideal as the thermal insulation of the jacket is sufficient.

The Iero 2 is up there at the top of the technical base layer range; it uses a mix of synthetic fabrics to transfer moisture away from your skin to the outside of the base layer, where it can subsequently evaporate, leaving you cool and dry. Because the fabric is so effective at wicking through perspiration, you don't need it to cover every centimetre of your torso, so Primal have used a mesh that allows greater cooling as well as wicking. The results are impressive, and this wicks sweat so effectively that you are left in comfort even on long periods of exertion, such as when climbing.

The fit of the Iero 2 is extremely good too. The base layer uses memory fabrics and Spandex to provide an incredible amount of stretch, resulting in a One Size Fits All top, which stretches to be skin tight on any torso. Awesome!

I really can't fault this base layer; it is comfortable, soft, wicks well, washes well and above all the cut is outstanding. Whether it is to keep you dry and warm in the winter under a thermal jacket, or to keep you cool and dry in the summer under your race jersey, this top will match up to the performance of any outer layer.  

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