Macro view of FIERCEPULSE Blue Majolica printed legging fabric showing the cobalt tile print inside the stretch knit

What Are Leggings? Fabric, Fit and How to Choose a Pair

Updated August 14, 2026 by FIERCEPULSE

In brief

Leggings are close-fitting trousers knitted from stretch fabric that cover the leg from waist to ankle. They have no fly, no zip, no buttons and usually no pockets. The fabric does the fitting, so a pair pulls on and holds its shape by tension rather than by tailoring.

Modern leggings are made from a synthetic knit, usually polyester or nylon blended with spandex. That blend is what separates them from thin sheer tights and from woven trousers. Leggings are opaque enough to wear as pants on their own.

That is the short answer. The longer answer is where most people get stuck, because "leggings" is a single word covering at least five different cuts, three different rises, and two completely different ways of getting a pattern onto the cloth. This page sorts all of it out.

What makes a legging a legging?

Three things have to be true. The garment is knitted, not woven, which is why it stretches in every direction instead of just along the grain. It has no hard fastenings: the waistband is a stretch band, not a closure. And it is opaque, meaning it reads as clothing on its own rather than as a layer worn under something else.

Drop any one of those and you have a different garment. Sheer tights fail the opacity test. Jeggings are printed or woven to look like denim and often carry a fake fly. Woven "legging-style" trousers stretch in one direction only and wrinkle at the knee.

The word is older than any of this. The Online Etymology Dictionary traces "legging" to 1763, when it meant an extra outer covering worn to protect the leg. Wikipedia notes the garment returned to women's fashion in the 1960s alongside the spread of Lycra, which is when leggings became the stretch item we mean today. So the modern legging is roughly 60 years old; the word is roughly 260.

The nearest neighbor is yoga pants, and the difference is real but small. We break it down separately in leggings vs yoga pants and in the difference between yoga pants and leggings.

What are the different types of leggings?

Length is the first fork. Every cut below is the same garment with a different hemline, and the hemline changes what the pair is good for far more than the fabric does.

Cut Where the hem lands What it suits
Full length At or just below the ankle bone The default. Boots, sneakers, cold weather, anything
7/8 A few inches above the ankle Showing the ankle, low-cut shoes, warmer months
Capri Mid-calf, below the knee Hot-weather training, spin, running errands
Flare Full length, then widens from the knee down Dressing leggings up. Reads as trousers, not gym kit
Biker Mid-thigh Layering, heat, cycling, wearing under a dress

Hem positions are typical and shift with your height. On a taller frame a 7/8 often wears as full length.

Rise is the second fork, and it changes comfort more than any other single spec. A high rise sits at or above the navel and stays put through bending. A mid rise sits below the navel and feels lighter. A low rise sits on the hips and is now rare in activewear. If you are choosing between the first two, we compare them directly in high waist or mid waist leggings.

FIERCEPULSE Blue Majolica Leggings in the classic full-length cut

The classic cut is the one most people picture: full length, high waistband, hem at the ankle. Ours run XS to XL at $88.99. The Blue Majolica Leggings shown here carry the same print as the fabric photographs on this page.

One thing worth knowing before you shop: at FIERCEPULSE the size range is set by the cut, not by the brand. The classic and yoga cuts run XS to XL. Plus sizes are a separate line with its own prints and its own fit, which lives in plus size leggings. Two of our cuts, flare and pocketed, are built on a wider block that runs 2XS to 6XL in one style. Check the size list on the product page rather than assuming one range covers everything.

FIERCEPULSE Blue Majolica Yoga Leggings with an extended high waistband

The yoga cut is the same length with a taller, wider waistband that sits higher on the torso and folds less when you hinge forward. Blue Majolica Yoga Leggings, XS to XL, $94.99. Browse the rest in yoga leggings.

What are leggings made of?

Almost every pair sold today is a blend of two or three fibers, and each one is doing a specific job.

  • Polyester gives the fabric its body, its color-holding ability and its resistance to shrinking. It is also the fiber that makes all-over printing possible, for reasons covered below.
  • Nylon is the alternative base. It feels smoother and slightly cooler to the hand than polyester and tends to be used where a silky finish is the goal.
  • Spandex, also sold as elastane or under the Lycra brand name, is the stretch. Wikipedia describes it as a polyether-polyurea copolymer capable of stretching up to five times its length. It is usually a small share of the blend, and a small share is all you need.
  • Cotton appears in casual, non-athletic leggings. It is comfortable and breathable, but it holds moisture and it loses its shape faster.

The practical read: a polyester or nylon base with spandex is what you want for training and for anything you expect to keep its shape. Cotton blends are for lounging.

How does the pattern get onto the fabric?

This is the part almost nobody explains, and it is the single biggest difference between a printed pair that lasts and one that does not. There are two families of method.

Surface printing puts the design on top of the cloth. Screen printing, heat transfer vinyl and direct-to-garment all work this way, laying pigment or a thin film across the fibers. It works on almost any fabric, and direct-to-garment printing works best on natural fibers such as cotton. But the design and the fabric remain two separate things stacked on each other.

Dye-sublimation puts the design into the cloth. Heat and pressure drive disperse dye into polyester fiber. Wikipedia's article on dye-sublimation printing describes the dyes as infused into the substrate at the molecular level, and puts the working temperature at 380 to 420 degrees Fahrenheit, or 195 to 215 degrees Celsius. Equipment maker Sawgrass publishes 400 degrees Fahrenheit for 35 to 40 seconds at medium pressure for polyester fabric. There is no layer sitting on the surface, which is why the same Wikipedia source notes that such prints will not crack, fade or peel from the substrate under normal conditions. It is also why the printed area feels identical to the unprinted area. There is nothing there to feel.

The catch is that it only works on polyester and polymer-coated surfaces. The dye class involved, disperse dye, is made for polyester. Cotton takes color through a different chemistry entirely: Cotton Incorporated describes fiber-reactive dyes forming covalent bonds with the cotton fiber. That trade-off sits behind every printed legging on the market. Bold all-over pattern requires a synthetic base.

Flat panel of FIERCEPULSE Blue Majolica print showing the full repeat and border band on performance knit

The same print laid flat. On a sublimated fabric the white of the cloth is genuinely undyed fiber, not a layer of white ink.

The stretch test

You can tell the two methods apart in about five seconds without any equipment. Take a printed area of the fabric and pull it taut between both hands, hard enough that the pattern visibly opens up.

A surface print cracks. Thin white lines appear between the blocks of color as the film splits over the stretching fibers. Release it and they mostly close again, but you have just watched the failure that eventually becomes permanent.

A sublimated print just gets paler. The color thins out evenly across the whole stretched area, because the dye is in the fiber and the fiber is what is moving. No white lines, no edges, no split. It returns to full saturation when you let go.

This is our own observation from printing our fabric, not a published standard. It is the check we use on the floor, and it works on any printed garment you already own.

If you can feel where the pattern is with your eyes shut, the pattern is sitting on the fabric rather than living in it.

The FIERCEPULSE print team

One correction is worth making, because it appears in almost every article on the subject. Dye-sublimation was named for the belief that the dye passed straight from solid to gas without ever becoming liquid. That explanation has since been revised. The same Wikipedia article states it was later shown to be incorrect, as there is some liquefication involved. The name stuck anyway, and the practical behavior of the fabric is unchanged either way.

How do you choose a pair of leggings?

Five checks, in the order that actually matters.

  1. Pick the rise first. It decides whether the pair is comfortable, and no other spec can rescue a rise that is wrong for you. High rise for training and for anything involving bending. Mid rise for everyday wear if you dislike pressure on the stomach.
  2. Then the length. Match it to your shoes. Full length under boots, 7/8 or capri with low-cut sneakers, flare with anything you would wear with trousers.
  3. Check the fiber content, not the marketing. A polyester or nylon base with spandex holds shape. A high-cotton blend will bag at the knee.
  4. Check the size list on the product page. Ranges differ by cut and by line. Do not assume the range you saw on one pair applies to the next.
  5. Decide about pockets before you buy, not after. A phone pocket is either there or it is not, and it is the single most common regret.
FIERCEPULSE Blue Majolica Leggings With Pockets showing the side phone pocket

On point five: the Blue Majolica Leggings With Pockets are the same print and length as the classic pair with a side pocket added, $94.99, and this cut runs a wider 2XS to 6XL. The full range is in leggings with pockets.

Frequently asked questions

What is the difference between pants and leggings?

Pants are usually woven and cut to a shape, with a fly, a zip or buttons holding them closed. Leggings are knitted, stretch to the shape of the leg, and close with nothing at all. The practical difference is that pants keep their shape when you are not in them and leggings do not.

What is considered a legging?

A garment counts as a legging if it is knitted from stretch fabric, covers the leg from waist to at least mid-thigh, has no fly or fastening, and is opaque enough to wear on its own. Length varies from mid-thigh biker cuts to full-length ankle cuts without changing the category.

What is the purpose of leggings?

Leggings do three jobs. They allow a full range of movement without the fabric restricting the joint, which is why they are worn for training. They provide a close, warm layer under dresses, skirts and longer tops. And they work as everyday trousers, which is the use that made them a wardrobe staple rather than gym kit.

Do you wear anything under leggings?

Most people wear regular underwear under leggings. Seamless or thong styles are the usual choice, because standard briefs can show a visible line through close-fitting fabric. Some training leggings include a gusset lining and are designed to be worn without anything underneath, which the product page will say if it applies.

What are leggings made of?

Typically polyester or nylon blended with spandex. The polyester or nylon carries the color and holds the shape. The spandex provides the stretch and recovery, and can extend up to five times its length. Casual leggings may use a cotton blend instead, which feels softer but loses its shape sooner.

Are printed leggings different from plain ones?

Only in how the fabric was finished. A printed pair is the same knit as a plain one. The difference is that the pattern was applied, either onto the surface or into the fiber by dye-sublimation. The cut, rise and stretch are unaffected. What to wear on top is a separate question, covered in our patterned leggings color guide.

Where to go next

If you want the print side rather than the cut side, five types of leggings every woman should own covers the pattern families. For fit by body shape, see best leggings for your body type. For keeping a pair alive, read how to care for leggings. For styling the flare cut specifically, try how to style flare leggings. And if you are over 50 and wondering whether leggings are still for you, the answer is in leggings for women over 50.

See every print in the FIERCEPULSE range →

Written by the FIERCEPULSE team, who design and print the fabric for every pair we sell. Published 14 August 2026.

Sources: Online Etymology Dictionary, Wikipedia (Leggings, Spandex, Dye-sublimation printing, Disperse dye, Direct-to-garment printing), Sawgrass heat-press settings, Cotton Incorporated. All links checked 14 August 2026.

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