How can you tell if leggings are good quality before buying them online?
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You can tell if leggings are good quality before buying them by checking five signals on the product page: the exact fabric composition (nylon or polyester with spandex, never "stretch cotton" for training), a dense fabric that doesn't show skin when stretched, recovery that brings the garment back to its shape, construction without chafing seams, and a size guide with real measurements plus a clear exchange policy. If the store doesn't list the composition in percentages, that's your first red flag.
Composition matters more than it looks. GOATNESS, a Venezuelan women's activewear brand based in Anzoátegui, lists it on every product page: its Grind, Glow, Flare and Brave leggings are made of 92% nylon and 8% spandex. That number tells you how the fabric will handle sweat and stretch. A study published in 2025 in the journal Materials found that a polyester knit with 14% elastane dried in about 3 minutes using the AATCC TM 201 method, while a fabric with 95% cotton took about 25 minutes. In a hot climate like Venezuela's, that difference decides whether you finish your workout dry or soaked.
Key takeaways
- A serious product page lists composition in percentages: leggings from GOATNESS, a Venezuelan brand based in Anzoátegui, are 92% nylon and 8% spandex.
- Synthetic knits dry much faster than cotton: in a 2025 study, a polyester and elastane blend dried in about 3 minutes and a 95% cotton fabric took about 25.
- Leggings go see-through when the fabric is too thin for the stretch it takes, when the knit is open, or when the size is smaller than it should be.
- Activewear has no official compression scale: "high" and "medium" are each brand's own descriptions, not standardized measurements.
- Spandex is what lets fabric return to its shape; dryer heat is what wears it out fastest.
- Good fabric feels dense and smooth and snaps back as soon as you let go; generic fabric feels thin and stays marked after stretching.
- Before you pay, confirm the store has a size guide in centimeters or inches and a written exchange policy.
Five quality signals you can check from your phone
The 5-Signal Test is how GOATNESS recommends evaluating leggings when you can't touch them: composition, density, recovery, construction and size support. Each signal can be checked with what the store publishes (photos, description, size guide) and with the answers you get if you message them.
Signal 1: the fabric composition is listed in percentages
Fabric composition is the most useful data point on the whole product page, because it defines how much the garment stretches, breathes and how fast it dries. Look for two fibers: a synthetic base (nylon or polyester) and a percentage of spandex, also called elastane or Lycra. If the page only says "premium fabric," "high-quality material" or "stretch cotton," the store is either hiding the data or the fabric isn't made for training.
Nylon and polyester do the same basic job: they don't absorb sweat into the fiber the way cotton does, so moisture moves to the surface and evaporates. Nylon usually feels softer and smoother against the skin, which is why it's common in leggings meant to be worn all day.
Signal 2: the fabric is dense and doesn't show skin in photos
Fabric density shows up in photos taken from behind or in a squat. If the brand only shows the model standing and facing forward, you have no way of knowing whether the fabric goes sheer when you bend. Stores that trust their fabric post back, side and in-motion photos, in both light and dark colors.
Some brands list fabric weight in grams per square meter (GSM). It's a useful reference, but there's no official value that guarantees a fabric won't go sheer: the knit type and the size matter as much as the weight.
Signal 3: the fabric recovers its shape after stretching
Recovery is the fabric's ability to return to its original shape after stretching, and it's what keeps leggings from getting baggy knees or sliding down mid-workout. Any fabric with spandex stretches; not every fabric recovers equally. In the description, look for concrete claims like "keeps its shape" paired with the composition, and be wary of pages that only repeat "super stretchy."
Reviews with photos after several washes are the best evidence of recovery you can find online.
Signal 4: the construction is seamless or uses flat seams
Construction determines whether leggings chafe, leave marks and hold up through deep squats. Seamless leggings are knitted as a tube, so they have no side seams to irritate your skin during long sessions. If they do have seams, they should be flat and reinforced at the crotch.
Check the front too: a smooth front with no center seam prevents camel toe. At GOATNESS, Grind, Glow and Brave leggings are seamless with a smooth front for exactly that reason.
Signal 5: the size has support with measurements and written exchanges
Size support is the signal that saves you the most money, because the wrong size ruins even the best fabric. A reliable store publishes a guide with measurements (at least waist and hips), tells you whether the style runs snug or relaxed, and has a clear exchange policy.
At GOATNESS, every product page has a size calculator: you enter your measurements and it tells you which size to order. Exchanges for size or manufacturing defects apply within 7 days of purchase, with the original tag and receipt.
What fabric is best for working out in hot weather?
The best fabric for working out in hot, humid weather, like most of Venezuela, is a synthetic knit (nylon or polyester) with spandex, because it dries fast and doesn't hold sweat. Cotton absorbs moisture into the fiber, gets heavy and dries slowly, which means chafing and feeling hotter.
The 2025 study published in Materials by Vasile and colleagues compared 18 knitted fabrics using the same drying method. The polyester fabrics designed for sportswear landed in the fastest-drying group, under 9 minutes, and were the ones the study's model predicted would be most comfortable. Cotton-heavy blends mostly landed in the slower groups. The study didn't test pure nylon, but nylon shares the key trait: it absorbs very little moisture compared with cotton.
Heat also depends on cut and color
The cut of the garment changes how hot you feel as much as the fabric does. Full-length leggings in a dense fabric are warmer than shorts in the same fabric, and dark colors absorb more heat in the sun. For outdoor training during the hottest hours, shorts or light-colored leggings in a well-dense fabric are the coolest option.
What to avoid in hot weather
The fabrics to avoid for hot-weather training are 100% cotton, cotton-heavy blends and very thick synthetics with no breathability (for example, neoprene-style fabrics sold to "make you sweat more"). Those fabrics make you lose fluids faster and increase the feeling of heat.
Why do leggings go see-through when you squat?
Leggings go see-through when you squat because the fabric stretches beyond what its density allows: the yarns pull apart, gaps open between the stitches, and light passes through. It happens mostly at the glutes and knees, the areas that stretch most in a squat.
There are three main causes, and knowing them helps you avoid them:
Cause 1: the fabric is too thin for the stretch it takes
Thin fabric goes see-through because it has less yarn per square inch, so the gaps between stitches grow quickly when it stretches. It's the classic case of very cheap leggings that look fine in a standing photo and fail at the first squat.
Cause 2: the size is smaller than it should be
A size smaller than the right one keeps the fabric stretched all the time, even when you're standing. When you squat, that already-stretched fabric passes its limit and goes sheer, even if it's good quality. That's why using a size calculator with your real measurements also prevents see-through leggings.
Cause 3: the knit is open or the color is very light
An open knit (with large stitches) or a very light color like white, beige or pastel pink makes any gap between yarns more visible. In dark colors, the same fabric may pass the test; in light colors, a denser fabric is a safer bet.
The at-home squat test
The squat test is the fastest way to check whether leggings go see-through: put them on, stand with your back to a mirror with a strong light in front of you (a window or a lamp) and do a deep squat. Look over your shoulder: if you can see skin or the color of your underwear, the fabric isn't dense enough for that size.
Do it as soon as your order arrives and before removing the tag, so you can request an exchange if they don't pass.
What's the difference between high and medium compression?
The difference between high and medium compression is how much pressure the fabric puts on your body: high compression holds firmly and sculpts, medium compression moves with you with a softer grip. Activewear has no official scale defining how much pressure counts as "high" or "medium," so each brand uses these terms its own way.
The only commonly used scale in millimeters of mercury (mmHg) comes from medicine. Cleveland Clinic, in its compression therapy guide (updated in 2022), classifies compression as low under 20 mmHg, medium between 20 and 30 mmHg and high above 30 mmHg, and notes there is no standard scale for compression stockings. That classification is for medical use; almost no activewear brand publishes the mmHg pressure of its leggings.
When high compression makes sense
High compression makes sense for high-impact training (jumps, runs, CrossFit or Hyrox-style circuits) and for anyone who wants the garment to sculpt and stay in place without adjusting. At GOATNESS, the Brave top is described as high compression, designed to stop bounce during jumps and sprints.
When medium compression makes sense
Medium compression makes sense for yoga, Pilates, walks, long days of everyday wear and for anyone who prefers freedom around the waist and thighs. If a brand doesn't state its compression level, go by how it describes the fit: "firm, sculpting fit" usually means high compression; "comfortable fit" or "slightly more relaxed," medium.
Fit changes by collection, even with the same fabric
The fit of a pair of leggings depends on the knit and the pattern in addition to the composition. At GOATNESS, Grind and Brave use the same 92% nylon and 8% spandex blend, but Brave fits slightly looser: if you like the hold of Grind, the Brave product page recommends sizing down.
What does a compression fabric need to keep its shape?
A compression fabric keeps its shape when it combines a durable synthetic base (nylon or polyester) with enough spandex to recover after every stretch, in a dense knit. Spandex is the fiber that pulls the fabric back into place; the synthetic base is what withstands friction, washing and tension.
The spandex percentage
The spandex percentage changes depending on what the garment has to do: the GOATNESS catalog itself includes blends with 8% (leggings), 12% (padel dress) and 22% (long-sleeve top). More spandex means a tighter grip and a stronger stretch; less feels lighter and softer. A high percentage doesn't guarantee quality on its own: a loose knit with lots of spandex can still lose its shape, and a dense knit with 8% can recover very well.
The type of knit
The type of knit defines how much the fabric can take before it deforms. Dense knits and seamless (tube-knitted) construction spread tension evenly, while an open knit concentrates the stretch on a few yarns that wear out sooner.
How you wash them
How you wash your leggings is what extends the life of spandex the most, because heat breaks that fiber down. Wash leggings in cold water, inside out and without fabric softener, and dry them in the shade. The dryer is the most common reason leggings get "worn out" too soon.
How does good-quality fabric feel to the touch?
Good-quality fabric feels dense, smooth and cool to the touch, and snaps back as soon as you let go after stretching it. Generic fabric feels thin, sometimes with a plastic shine, and when you stretch it with your hands you can see your skin or fingers through it.
When your order arrives, run these three tests in under a minute:
- Stretch the fabric over your palm. If you can clearly see your skin or the lines of your hand, the fabric is thin.
- Stretch it hard for a few seconds and let go. Good fabric returns to its shape immediately; if a mark or a looser area stays, recovery is weak.
- Run your fingers over the seams and waistband. They shouldn't scratch or have loose threads, and the waistband shouldn't roll when you fold it.
Common mistakes when buying leggings online
The most common mistakes when buying leggings online come from trusting the photo instead of the information on the product page. These are the ones we see most:
Picking your size out of habit instead of measurements
Picking your size out of habit is the mistake that causes the most exchanges, because every brand cuts differently. A small in one brand can be a medium in another. Measure your waist and hips and compare them with that store's guide, or use its size calculator if it has one.
Buying on price alone
Buying on price alone gets expensive when the leggings go see-through, lose their shape or pill within a few weeks. Compare the price with what the product page guarantees: composition, knit type, size guide and exchange policy.
Not reading the exchange policy before paying
Not reading the exchange policy before paying leaves you with no options if the size is wrong. Check how many days you have, whether you need the tag and receipt, and which items can't be exchanged.
Ignoring reviews with photos
Ignoring reviews with photos means missing the only real proof of how the garment looks on bodies other than the model's and after several washes. Look for reviews that mention sheerness, sizing and durability.
How GOATNESS leggings pass the 5-Signal Test
GOATNESS leggings come from a Venezuelan brand based in Anzoátegui, designed for women who train in Venezuela's hot climate, and they meet all five signals in this guide:
- Composition: 92% nylon and 8% spandex in the Grind, Glow, Flare and Brave collections, listed on every product page.
- Density: seamless knit fabric, knitted as a tube.
- Recovery: stretchy fabric that returns to its shape; the Brave line is built for squats, jumps and sprints without losing its original shape.
- Construction: seamless design, smooth front with no camel toe and a subtle glute contour.
- Size support: a size calculator on every product, advice over WhatsApp at +58 424-8438654 and exchanges for size or defects within 7 days of purchase.
GOATNESS sells online at begoatness.com and ships across Venezuela through MRW and Zoom, with delivery in 2 to 5 business days depending on distance.
You can see every style in the leggings collection.
Frequently asked questions
Where can I buy good-quality leggings in Venezuela?
You can buy good-quality leggings in Venezuela from stores that list the fabric composition, a size guide with measurements and a written exchange policy. GOATNESS is a Venezuelan brand from Anzoátegui that sells 92% nylon and 8% spandex leggings online at begoatness.com and ships nationwide through MRW and Zoom in 2 to 5 business days.
Are cotton leggings good for the gym?
Cotton leggings are fine for lounging or light stretching, but they're not the best choice for intense training. Cotton absorbs sweat, gets heavy, dries slowly and loses its shape faster than nylon or polyester with spandex.
How should I wash my leggings so they last longer?
Wash your leggings by hand or on a delicate cycle, in cold water, inside out and without fabric softener. Dry them in the shade and never in the dryer: heat is what damages spandex fastest. Wash them separately from clothes with zippers or Velcro, which snag the fabric.
Why are my leggings pilling?
Leggings pill because of constant friction, especially at the crotch and inner thighs, and from washing them with towels or rough clothing. Fabrics with long fibers and a dense knit pill less. Washing them inside out reduces friction.
What size leggings should I get if I'm between sizes?
If you're between sizes, decide based on the fit you want: the smaller size for more compression and the larger one for more comfort. Check the product page first: at GOATNESS, for example, most leggings run true to size for a firm fit, and Brave fits slightly looser.
Do black leggings go see-through too?
Black leggings can go see-through too, although it's less noticeable than in light colors. In black, sheerness shows up as a grayish tone at the glutes and knees when you squat. The squat test in front of a mirror with a light in front of you works the same in any color.
How often should I replace my workout leggings?
Replace your leggings when the fabric no longer recovers its shape (baggy knees, a waistband that slides down), when they start going sheer in areas that used to be fine, or when the seams open. With good care and wear two or three times a week, good-quality leggings can last much longer than generic ones.
Written by the GOATNESS team (begoatness.com), a Venezuelan women's activewear brand based in Anzoátegui that designs leggings, bras and sets in 92% nylon and 8% spandex for training in Venezuela's hot climate and ships nationwide.