Slim vs. Relaxed Jeans: What the Fit Names Actually Tell You

Before a shopper chooses a size, they first decide the shape of the jeans they want. You have to choose between skinny, slim, regular, or relaxed, then choose again between straight, tapered, or wide. Those labels determine most of how a pair of jeans fits.

I’ve already written about how the number on the tag doesn’t match the waist it describes. This time, I wanted to look at the fit names around that number. If two jeans have the same waist measurement, how much roomier is the one called “relaxed” than the one called “slim”? Does a “straight” leg actually run straight from the knee to the hem?

What I found:

• Brands broadly agree on what slim and relaxed mean, but individual jeans vary so much that the name alone can’t tell you how one will fit.
• At the same waist measurement, relaxed fit is about three-quarters of an inch wider in the thigh than slim fit, but the two overlap heavily.
• Most straight legs are not straight and narrow below the knee.

Materials and Methods

The data comes from the Denim Fit Finder catalog, which I build from size charts that brands and retailers publish.¹ As of October 25, 2026, it holds 32,444 charted sizes across 3,814 models from 167 brands.

A tagged size 32 can measure anywhere from 31 to 34½ inches around,² so comparing fit names at the same tag size would make the analysis misleading. Instead, I compared jeans with the same measured waist. For every men’s and unisex model, I chose the one size whose waist measured closest to 34 inches, within half an inch. That left 2,946 models.

I grouped those by the fit and leg shape each jean is sold under: its model name, or the fit name the brand or store gives it. Some stores don’t label the fit at all and put it in the product description instead; for those, the fit name comes from the description. Products that don’t name a fit and leg shape have been left out of the comparison. The charts measure the thigh, knee, and leg opening flat.

Brands don’t always measure the thigh or the knee at the same place. Some measure the thigh at the crotch seam, others an inch below it.³ That adds noise to every comparison here, though not enough to explain the gaps described below.

Fit and Leg Shape Are Two Different Things

Jean names describe two different things, and each term has an accepted meaning. Fit determines how much room there is through the seat and thigh, what some guides call the “top block.” Levi’s defines its men’s fits this way:⁴

• Skinny: “slim through the seat and thigh, with a narrow leg opening.”
• Slim: “slightly roomier than skinny, but still close-fitting through the thigh and leg.”
• Regular: “a straight leg from hip to ankle.”
• Relaxed: “loose through the seat and thigh.”
• Loose: generous through the thigh, roomier still.⁵

The leg shape sets what the leg does from the knee down:

• Straight: keeps “a consistent width from the hip to the ankle.”⁶
• Tapered: narrows “from the thigh to the ankle.”⁶
• Wide: the widest leg a brand cuts.⁷

A pair often carries one of each, like “Slim Straight” or “Relaxed Tapered,” and the Fit Finder shows the combination as the jean’s cut.

Slim vs. Relaxed: Three Quarters of an Inch Apart

At a 34-inch waist, this is the median thigh, measured flat, for each fit:

The fits land in the order you’d expect, with small steps between them. A relaxed jean is a median ¾ of an inch wider in the thigh than a slim one at the same waist, and regular sits almost exactly in between. Measured flat, ¾ of an inch comes to 1½ inches around the leg. That’s less than the spread within any one fit.

Skinny barely separates from slim. The typical skinny jean measures 12 inches across the thigh, just a quarter inch under the typical slim. A third of skinny jeans are as wide as a typical slim, and about four in ten slims are no wider than a typical skinny.² Only 15 skinny jeans from five brands made the sample, so treat this data as anecdotal.

One in Five Relaxed Jeans Is No Roomier Than a Slim

The ranges overlap far more than the medians suggest. About one in five relaxed jeans isn’t wider in the thigh than a typical slim. Conversely, nearly one in ten slim jeans is as wide as a typical relaxed.² The narrowest slim and the narrowest relaxed jean in the sample both measure 10¼ inches across the thigh.

Straight Rarely Means Straight

Leg shape names do appear to describe the hem. At the same 34-inch waist, the typical tapered jean is about 7 inches across the leg opening, the typical straight jean 8½ inches, and the typical wide jean 9¾ inches. Only about one straight leg in 50 is as narrow at the hem as the typical tapered jean.²

The textbook definition of a straight-leg jean is that it stays the same width all the way down. Very few actually do. Among straight-leg jeans whose size charts list the knee, nearly six in ten narrow by an inch or more between the knee and the hem. Only about one in twenty, or 5%, stays within a quarter inch.²

A typical tapered jean narrows 1½ inches from knee to hem, while a typical straight or wide leg narrows about an inch. In the charts, “straight” and “wide” more accurately describe the leg opening, since nearly every leg still narrows toward the hem.

Brands Mostly Agree on What Slim and Relaxed Mean

Brands are consistent about their own fit names. Among brands that make both:²

• Slim vs. relaxed: 86% cut their relaxed jeans wider in the thigh, usually by a little over half an inch.
• Tapered vs. straight: 94% cut their straight leg wider at the hem.
• Straight vs. wide: 94% cut their wide leg wider at the hem.

Brands agree with each other, too. Pair one brand’s typical slim with another brand’s typical relaxed, and the relaxed one is wider 90% of the time.²

Where the names fall short is the individual jean. A brand’s typical relaxed is roomier than its typical slim, but any single relaxed jean can still measure like a slim, as the overlap above shows. The fit name tells you what to expect on average. The measurements tell you what you’re actually getting. If your thighs need room, you’ll find the roomiest jeans by measurement more easily than by name.

What to Read Instead of the Name

The numbers explain why the name isn’t enough. Within any one fit name, the middle 80% of jeans spread across an inch and a half to two inches of thigh. The step from the typical slim to the typical relaxed is three quarters of an inch, about half that spread. A fit name moves the odds in your favor, but the range inside each name is wider than the gap between names, so any one jean can land in its neighbor’s territory. Treat the name as a starting point and let the measurements decide.

Whatever the fit name says, check three numbers on the size chart for your waist size. Start with the thigh, then compare the knee with the leg opening. The leg opening is the width at the hem, and the gap between the two numbers tells you how much the leg narrows below the knee.

Most published size charts list all three, usually a few lines below the fit name. Waist size is its own question, and The Sizing Cliff covers how far size runs reach.

Before your next order, measure the thigh, knee, and leg opening on the pair that fits you best, and compare those three numbers instead of the fit name.

Sources

1. Indigo & Asphalt Denim Fit Finder catalog, compiled from brands’ and retailers’ published size charts, snapshot of October 25, 2026. indigoandasphalt.com/fit-finder ↩
2. Author’s analysis of the catalog in note 1, October 25, 2026. Men’s and unisex models, one size per model at a measured waist of 33.5 to 34.5 inches around. Fit and leg shape read from each model’s name or the fit name its brand or store gives it, which for some stores is taken from the product description. Knee-to-hem figures use only jeans whose charts publish a knee. Within-brand comparisons use each brand’s median for each fit or leg shape: 18 of 21 brands cut relaxed wider than slim in the thigh (one the same, two narrower; median gap 0.6 inches), 46 of 49 cut straight wider than tapered at the hem, and 30 of 32 cut wide wider than straight. The cross-brand figure pairs each brand’s median slim with every other brand’s median relaxed (1,638 of 1,815 pairs). Exact counts: 5 of 15 skinny at least as wide as the median slim; 158 of 387 slims no wider than the median skinny; 50 of 249 relaxed no wider than the median slim; 34 of 387 slims at least as wide as the median relaxed; 20 of 900 straight legs at or below the median tapered leg opening; of 721 straight legs whose charts include a knee, 424 narrow an inch or more and 39 stay within a quarter inch. Tag-size range: models tagged 32, sanforized or washed, 10th to 90th percentile. ↩ ↩ ↩ ↩ ↩ ↩ ↩
3. Indigo & Asphalt, “The Size Tag Never Tells the Full Story”, on Self Edge and Okayama Denim measuring the thigh at different heights. ↩
4. Levi’s, “Levi’s Product Size Guide”, men’s fit definitions. ↩
5. Pepe Jeans, “Loose Jeans”, men’s collection description. ↩
6. FashionBeans, “What Are Tapered Jeans? Style, Fit and How to Wear in 2026”. ↩ ↩
7. Desigual, men’s jeans fit description, wide leg as the widest model. ↩