Air Supply and Fairy, Explained: Which Series Suits Which Kid

Two questions come up more than any others when a parent looks at our range for the first time. The first is about a fabric: what exactly is Air Supply, and is it different from every other T-shirt that claims to be breathable. The second is about a print: is Fairy just a pattern, or is there something underneath it.

Both are fair questions, and the honest answer is that the two series solve different problems. One is a fabric story. The other is a shape-and-print story that happens to sit on good fabric. This is a guide to which one suits which kid, written for the season when both start getting layered rather than worn alone. If you are shopping breathable kids activewear for the first time, start here.

Air Supply: the one built around airflow

Air Supply is our lightest, most vented family, and the numbers are the point of it. The fabric carries roughly 40,000 micro-vents, so air moves through the cloth instead of sitting against the skin. Sweat is pushed outward quickly rather than held, which is what stops a sleeve going heavy halfway through a session. It is light enough that kids forget they have it on, and the cooling comes from the yarn itself rather than from a finish sprayed on afterwards.

That last detail matters more than it sounds. A cooling finish washes out over a season; a cooling yarn does not. It is the difference between a shirt that feels good in the shop and a shirt that still feels good in March.

Where it earns its place: indoor training halls that run warm in every season, back-to-back practice days, long travel days, and the child who overheats within ten minutes of anything. The Air Supply Long Sleeve Tee is the piece most families end up owning two of, and the short sleeve version is the summer-into-autumn staple. On the bottom half, the Air Supply Lightweight Pants are almost weightless and dry fast, which is why they travel well.

Fairy: the one built around how it looks and moves

Fairy starts from the opposite end. It begins with a print — soft, hand-drawn, a little dreamy — and then asks how to build that print into clothes a child can actually run in. The result is a family of shapes you do not normally find in technical activewear: skirted leggings, a proper athletic dress, a printed jacket that doubles as sun cover.

The Fairy 2-in-1 Leggings explain the whole series. They read as a skirt and perform as leggings, which settles the argument between a child who wants to wear a skirt to school and a parent who knows there is a climbing frame at break time. The sleeveless athletic dress works the same way, with shorts built in underneath. The printed tee is weightless enough for a warm day, and the printed jacket is a sun layer with a cool touch to it rather than a warm one.

Where it earns its place: the kid who has opinions about clothes. That is not a small category. The best predictor of whether a piece gets worn every week is whether the child chose it, and a print they love does more for that than any fabric spec.

Which one, for which kid

• If the problem is heat. Air Supply, every time. A child who finishes every session red-faced and damp needs airflow, not a lighter colour.
• If the problem is the argument at 7:40am. Fairy. A skirted legging or a dress that survives a playground removes the negotiation entirely.
• If it is for training, formally. Air Supply on top, paired with a plain legging from our best sellers rather than a printed skirt — coaches like clean lines, and so do kids who would rather not stand out.
• If it is for everything else. Fairy handles school, the park and a cousin visiting, and does not look like sportswear when it is not being used as sportswear.
• If you are buying one of each. A good starting pair is an Air Supply long sleeve plus a Fairy 2-in-1 legging. Between them they cover a training day and a school day, and both wash on the same cycle.

How both series work once it gets cooler

Neither series is a winter garment on its own, and this is where most families get it wrong. Both are designed to move air, which is exactly what you want against the skin in cold weather too — a damp layer is what makes a child cold, not a thin one. Worn as the first layer with something warm over the top, a vented long sleeve beats a thick cotton shirt by a wide margin.

So: an Air Supply long sleeve under a fleece for a cold training hall. A Fairy printed jacket over a long sleeve on an in-between autumn afternoon. If you want the layers mapped to actual degrees rather than to guesswork, our temperature dressing chart does that, and the base layer guide explains what should sit closest to the skin and why.

Sizing and care, one paragraph each

Both series are cut for movement, which means they sit closer to the body than a school uniform but never tight. If your child is between sizes and growing, size up on Air Supply tops — they are meant to hang lightly — and stay true to size on Fairy leggings and dresses, where a loose fit defeats the built-in shorts. Our activewear sizing guide has the measurements, and everything runs on US kids sizing.

Care is the same for both, and simpler than the label suggests: cold wash, gentle cycle, no fabric softener, hang dry or tumble low. Softener is the one real enemy, because it coats the fibres that do the wicking. The full routine is in how to wash kids activewear.

Frequently asked questions

If you are still deciding, look at what your child reaches for now. A kid who peels layers off is telling you to buy Air Supply; a kid who has opinions at the wardrobe is telling you to buy Fairy. Both live in our kids activewear collection, and the pieces families buy most often are gathered in best sellers.