The X-Factor:
The Inflation Problem and the History of the Standard

When you buy a cowboy hat, you quickly run into a mysterious rating: 4X, 10X, 20X, 100X, sometimes even 1000X. These numbers are supposed to indicate the quality of the felt, but what do they really mean? The answer is less simple than it looks, and understanding the history of this system is essential if you don't want to get taken.

A Standard Born of Simplicity

The first crucial point to grasp is that the X rating system is not standardized in the cowboy hat industry. There is no common standard, no oversight body, no legal definition. Each manufacturer uses its own scale, which makes comparing brands particularly tricky.

Historically, the X was an indicator of felt quality, tied mainly to beaver content. In the 1950s, a 10X Stetson was the top of the line and meant a hat of 100% pure beaver: the industry's absolute benchmark. A 2X contained a far smaller proportion of beaver, or none at all depending on the era, the rest being rabbit, hare, or wool. The system had the merit of being relatively easy to read.

The X also served as a direct price guide: there was a time when a 3X cost about $30, a 4X $40, a 5X $50, and a 10X $100. The number on the sweatband gave an immediate sense of what you were about to spend.

X Inflation: When Marketing Takes Over

But from the 1970s on, the rising cost of furs and the pressure of marketing competition fractured this standard. To keep prices attractive, manufacturers cut the beaver content while keeping (or even inflating) the X numbers. That is how ratings of 20X, 50X, 100X, 500X, up to 1000X and beyond, came to appear. Industry specialists describe this escalation as a genuine arms race of grade inflation.

To convey the scale of this drift, here are a few historical reference points:

• 1910s–1930s: at Stetson, the 5X was the absolute top of the line: a pure, undyed beaver of the highest quality, the kind of hat given as a presentation piece. It sold for roughly eight times the price of a standard fur-felt Stetson. There was nothing above it.

• 1950s: the 10X Stetson becomes the new benchmark for 100% pure beaver, replacing the 5X at the top of the line. It cost about $100 (about $1,200 in 2026).

• Today: the equivalent of the pure beaver of old would be Stetson's 100X "El Presidente," sold for around $1,300.

The number, meanwhile, has grown twentyfold in less than a century, not because the quality grew twentyfold, but because marketing inflated the figures. The detail is telling: adjusted for inflation, the price of the top of the line has barely moved: a pure beaver already cost the equivalent of $1,200 in the 1950s. Only the rating has exploded.

A revealing detail: the same X grade, from the same manufacturer, can correspond to radically different qualities depending on the era. Collectors of vintage hats report that a XXX (3X) Stetson from the 1910s had a felt superior to a XXX from the 1950s, which was itself markedly better than a XXX from the 1970s. Inflation, then, is measured not only between brands, but also over time, within the same brand.

The Traps of Today's System

Today, the X is more an indicator of a price tier within a single brand than a real percentage of beaver. Here are the most common traps.

Trap #1: comparing X ratings across brands. One brand's 20X may be worth far less than another's 10X. A 20X Master Hatters of Texas is not at all the same thing as a 20X Resistol: there can be about $400 of difference between the two, and above all a gulf in felt quality. The high-end brands (Resistol, Stetson, American Hat Company) use the best parts of the beaver; the more affordable brands (Master Hatters, Twister) use the lower-quality parts for the same X number.

Trap #2: believing that "beaver" means beaver. Some hats stamped "2X Beaver" or "4X Beaver" may be made mostly of wool or rabbit, with a negligible (or even nonexistent) proportion of beaver. The words beaver quality guarantee nothing at all about the actual presence of beaver in the felt.

Trap #3: confusing felt and straw. The X system exists for straw hats too, but there it measures something completely different: the fineness and density of the weave, not the composition of the material. A brand-new 10,000X straw hat can cost less than $200: the two systems are not comparable at all.

Trap #4: ignoring age. A vintage hat marked 5X can be of far better quality than a modern hat marked 20X from the same brand, because of grade inflation over the decades.

The Brands That Chose Honesty

Faced with a system grown opaque, several brands have opted for transparency — each in its own way.

Some have broken with the numbers game:

• Resistol calls its top-of-the-line hat "The Resistol Pure" (100% pure beaver) rather than assigning it an inflationary X number, sidestepping the game to make a clear statement of material quality.

• Greeley Hat Works (Greeley, Colorado) has simply dropped the X system to name its ranges by their actual composition: Competitor (European hare), Beaver 20 (20% beaver), Pure Beaver (100% beaver). No inflated numbers, no ambiguity.

• Montana Rio Hat Co., a small artisan workshop in Montana, makes only 100% pure beaver hats and refuses to use the X-Factor, which it considers misleading.

Another has chosen to keep the X, but apply it honestly:

• American Hat Company keeps the X rating but without inflating it: its grade really does correspond to what you hold in your hands. In ranch and rodeo circles, its scale is regarded as a benchmark of reliability. Proof, if any were needed, that the problem was never the X itself, but the dishonest use some make of it. (The full profile of the brand is the subject of the article The X-Factor — The Other Players, American Hat Co, Bailey, Master Hatters of Texas, Greeley Hat Works.)

The Takeaway

The X remains a reliable guide within a single brand: a Stetson 100X is unquestionably superior to a Stetson 10X, a Resistol 40X is better than a Resistol 6X. But it loses all meaning the moment you compare across manufacturers or across eras.

The only way to really know what you're buying is to understand three things:

1. The raw material: which furs make up the felt? This is the subject of the article The X-Factor — The Furs, Understanding the Raw Material.

2. The brand: what is its rating policy and its historical honesty? This is the subject of the articles The X-Factor — The Historic Brands, Stetson, Resistol, Serratelli and The X-Factor — The Other Players, American Hat Co, Bailey, Master Hatters of Texas, Greeley Hat Works.

3. Your own senses: touch, eye, and the water test never lie. This is the subject of the article The X-Factor — Practical Guide, How to Judge for Yourself and a Comparative Ranking.

The number stitched on the sweatband doesn't tell the truth. The material, on the other hand, never lies.