Under Armour Men UA HG Armour Comp LS, Long-Sleeve Sports

I bought this as a base-layer to use under motorbike gear and with a strong tilt towards hot-weather use. The material is very stretchy and has a highly effective wicking capability. It provides a little warmth in colder days, but really comes into its own in the heat (hence the Heat Gear moniker). In moderate (typical UK) heat, you rarely feel wet with sweat because it gets wicked away from your skin, but as soon as there’s air movement the evaporation really kicks in and it feel like someone’s hit the A/C.

And now the sizing… It’s a compression base-layer and as such skin-tight; not baggy, not tailored or slim, but vac-packed on. It’s got loads of stretch, so no issues with being too tight, but just bear in mind your average punter isn’t going to look good walking down the street in this – it’s definitely a base-layer for under something else! It comes out of the bag with the torso width looking several sizes too small, but that’s the stretch bit – it fits just fine and even with my long arms, I really don’t want any more length in the arms or torso.

So, overall, very effective, but unless you’ve spent a lot of time working out, best keep it under something more flattering. I have the bottoms as well and same story.