All three shirts are black and all three are size M, which makes this the version to buy if you want a base layer you never have to think about. Wear one, wash one, keep one folded. The fabric here is 90 percent nylon with 10 percent spandex - firmer on the hand than a spandex-heavy knit, breathable, and quick to dry after a wash or a workout.
A compression shirt sits against the skin, so it goes in the wash after every wear. One shirt means doing laundry on a schedule you did not choose; three covers a normal week and a slow weekend. Identical colors also mean no thinking about which one is clean.
The 90 percent nylon content gives this one a smoother, slightly denser feel than the spandex-led versions in the range. It keeps its elasticity over time, moves air, and sheds moisture fast, so it does not stay damp against the chest through the second half of a session.
Medium covers a 24.4 to 27.1 inch measured chest and a 26.7 to 28.3 inch waistline. Those are stretched-to-fit numbers, not off-the-rack shirt sizes, so read them against a tape measure. If your waist lands above the top figure, the next size up will wear better.
A solid black base layer works under a dark uniform shirt, a hoodie or a training top without reading through the fabric. It carries over from a gym session to the rest of the day, which is the practical case for buying the plain colorway three at a time.
Specifications as published by the manufacturer for this model.
Three compression base layers - grey, black, white - in size L, 90% nylon with spandex.
Five compression tank tops in size XXL - two black, two white, one grey.
