Ronhill Matrix Long-sleeve Top review £55

Made from a fairly thick, stretchy, dimpled material, this warm top breathes and wicks well. It's suitable for spring or cooler summer days and is water-resistant in light showers. The small, zipped pocket is big enough for keys or cash, and the fold-over cuffs will keep your hands warm in the cold. Relaxed fit, but the material is quite clingy. 

Verdict: 8/10
Warm, breathable, wicks well, but needs a bigger pocket.

The September-October 2018 edition of Trail Running contains plenty more long-sleeve, half-zip tops reviews.