Leggings That Aren't See-Through: How to Find Squat Proof Leggings
If you have ever felt exposed mid workout, you already know the problem. A pair of leggings can look opaque on the hanger and turn sheer the moment you bend. Here is how to tell whether a pair is genuinely see-through before you buy, so you are never caught out again.
The squat test
The single most reliable check is the squat test. At home or in a fitting room, put the leggings on and drop into a deep squat in front of a mirror in bright light. Look for any lightening of color across the seat and thighs. If the fabric pales or the weave becomes visible, they will be sheer in the gym too. Truly opaque leggings hold their color under full stretch.
What GSM actually means
GSM stands for grams per square meter, a measure of how dense and heavy the fabric is. Lightweight leggings often sit around 180 to 220 GSM, which can feel airy but is more likely to go sheer. A denser knit, closer to 240 to 280 GSM, gives you the compression and coverage that keeps leggings opaque through deep movement. When a brand publishes its GSM, it is usually confident in the fabric.
Fabric and color matter
- Higher spandex content adds stretch, but too much stretch on a thin knit is what causes sheerness. Balance is the goal.
- Double sided or double knit construction adds a layer of opacity that single knit fabrics lack.
- Lighter and brighter colors show sheerness first, so the squat test matters most on pale shades.
What to look for
Choose leggings that publish their fabric weight, use a denser double knit, and are described as squat proof or full coverage rather than simply soft. A waistband that sits high and stays put is a good sign the brand has engineered for real movement, not just the photo.
Where WST fits
WST makes refined activewear built on a dense, double sided knit designed to stay opaque through every squat. No scrunch, no exposure, just a clean line from waist to ankle. The Muse Collection launches September 1.
Join the waitlist to be first in line.
Common questions
How do you stop leggings from camel toeing?
Camel toe is usually a fit and fabric problem, not a body problem. It happens when a thin, single knit is pulled tight across a low or mid rise front seam. A high rise waistband moves the seam away from the point of tension, and a denser double sided knit holds its shape instead of moulding into it. Look for a gusset too, which replaces the four way seam junction with a flat panel.
What underwear should you wear with leggings?
Seamless or laser cut styles, or none at all if the leggings have a gusset and a dense enough knit. The visible line people worry about comes from a thick elastic edge sitting under a thin fabric. A heavier knit at 240 GSM or above hides far more than a lightweight legging will, whatever you wear underneath.
Why do my leggings make me feel bigger than I am?
Usually because the fabric has lost its recovery. A legging that stretches but does not spring back sits away from the body and bunches at the knee and waist, which reads as bulk. Compression is not about squeezing, it is about a fabric that returns to shape. If your leggings bag out after an hour, the knit has failed, not you.
Do darker leggings hide sheerness better?
Yes, but it is a workaround rather than a fix. Pale and bright shades reveal a weak knit first, which is why the squat test matters most on light colours. A genuinely opaque legging holds its colour under full stretch in any shade. If a brand only offers black in its 'squat proof' line, that tells you something.