Gymwear Fabric Guide: What to Look for Before You Buy

Most gymwear looks roughly the same on a hanger. The difference shows up after the first month, when cheaper fabric starts to sag, pill or lose its stretch. If you’re building out a training wardrobe, the fabric is doing more work than the design.

Four-way stretch, not two-way

Two-way stretch fabric moves in one direction, usually across the body. Four-way stretch moves with you in every direction, which matters the moment you squat, lunge or reach overhead. Cheaper leggings and shorts often use two-way stretch because it’s less expensive to produce, and it shows the first time you drop into a deep squat.

Moisture-wicking is not the same as breathable

A fabric can wick sweat away from your skin and still trap heat if it doesn’t breathe. Look for lightweight weaves with some ventilation, particularly around the back and underarms, if you’re training somewhere warm or doing anything high intensity.

Check the seams, not just the fabric

Flatlock seams sit flush against the skin rather than raised, which cuts down on chafing over a long session or a long run. It’s a small detail, but it’s usually the first thing that separates gymwear built for training from gymwear built to look like it.

Wash it before you judge it

The real test of any piece of activewear is how it looks after ten washes, not one. Fabric that holds its shape, colour and stretch after regular washing is worth paying slightly more for. Anything that needs babying isn’t built for a gym bag.