What "Squat-Proof" Actually Means (And How We Test It)

Every brand says their leggings are squat-proof. Very few of them actually test it. At Lucia, we do — and here is exactly how.

When we receive a new production sample, the first thing I do is put them on and do a full set of squats in natural light. Not studio light, not the flattering kind. Natural light, in front of a window, the way you would look in a real gym or outdoor class.

I check three things: Does the fabric pull at the knee? Does the waistband roll or gape? And most importantly — can you see through the fabric when stretched?

The opacity test is the non-negotiable. If I can see my skin tone at all through the fabric in a squat position, the legging fails. Full stop. We return the production run and work with the factory to adjust the fabric weight or construction.

We have turned down two production runs so far. It is expensive. It delays our timeline. But it is the only way to stand behind what we sell.

The fabrics we use — our FlexKnit™ blend — are 88% nylon, 12% spandex at a weight that provides both stretch and opacity. The weave structure is what makes the difference. A cheaper construction will pass a static opacity test and fail the moment you move. We test in motion, every time.

When your leggings arrive from Lucia, you have our word: they have been worn, squatted in, and approved before they were ever packaged.