What Are UGGs? Materials, History, Types, and Everything You Need to Know

So, what are UGGs? UGGs are a style of soft boot made from twin-faced sheepskin wool on the inside, suede on the outside originally worn in Australia and later popularised globally.

The name refers both to a registered footwear brand and, in Australia, a generic boot style.

What Are UGGs Made Of?

The defining feature of an UGG boot is its material. Twin-faced sheepskin means the hide is processed so the wool fleece faces inward and the suede exterior faces outward both from the same piece of skin. This is what gives UGGs their distinct feel: soft, warm, and slightly cushioned without added insulation.

The Sheepskin Construction

The wool lining does most of the functional work. It traps warm air close to the foot in colder temperatures and wicks away moisture when it's warmer, which is why UGGs are often described as wearable across seasons.

That said, they are not insulated boots in the traditional sense they are warm, not waterproof.

The outer shell is tanned sheepskin or suede, which is why UGGs can stain or water-mark fairly easily in wet conditions.

In practice, most owners treat their UGGs with a water-repellent spray before first wear to slow down this process.

Sole and Base

Classic UGG boots use a lightweight EVA (ethylene-vinyl acetate) or rubber outsole. It's flexible and light, designed for comfort rather than heavy outdoor use. This is worth knowing before you buy UGGs are not hiking boots, and the sole reflects that.

Vegan and Synthetic Alternatives

UGG (the brand) has introduced a growing range of styles using UGGplush, a plant-based wool alternative, and other synthetic linings.

These are clearly labelled on the brand's product pages. Functionally, they are similar in softness but differ slightly in breathability compared to genuine sheepskin.

Is UGG a Brand or a Type of Boot?

This trips a lot of people up. The short answer: both, depending on where you are.

UGG as a Registered Trademark

In most countries including the United States, the UK, and most of Europe UGG is a registered trademark owned by Deckers Brands, a California-based footwear company that acquired the original business in 1995. If you buy "UGG" boots from a major retailer, you are buying a Deckers product.

"Ugg Boot" as a Generic Term in Australia

In Australia, the term "ugg boot" is considered generic descriptive of a style, not a brand. As reported by Fortune, Australian manufacturers have argued that "ugg" is a generic term much like "feta" or "Champagne" a descriptor for a regional product style, not a single brand's exclusive name.

More than 70 Australian trademarks include the word "ugg" in various forms. This means multiple Australian manufacturers legally produce and sell "ugg boots" without infringing on Deckers' trademark, because the trademark protection does not apply there in the same way.

What's often overlooked is that this creates genuine confusion for shoppers. An "Australian-made ugg boot" purchased from a smaller Australian company is not the same product as one sold by the UGG brand, even if both use real sheepskin.

Why This Matters When You Shop

Feature	UGG (Deckers Brand)	Generic Ugg Boot
Trademark status	Registered in US, UK, EU	Generic term in Australia
Materials	Sheepskin or synthetic, clearly labelled	Varies by manufacturer
Price range	Typically $100–$250+ USD	Varies widely
Quality consistency	Standardised across product lines	Dependent on individual maker
Country of manufacture	Varies (not exclusively Australian)	Some Australian-made options available
Counterfeit risk	High — buy from authorised retailers	Lower, but quality varies

Neither is inherently better they serve different buyers and budgets. The important thing is knowing which one you're buying.

A Brief History of UGG Boots

UGG boots didn't start as a fashion item they started as a practical solution, and the path from rural Australia to global retail is a surprisingly straightforward one.

Origins in Australia

Sheepskin boots have been worn in Australia since at least the early 1900s, particularly by farmers and rural workers who had direct access to sheepskin offcuts. Children wore leftover scraps as simple slippers.

By the 1950s, ugg boots had become recognisable enough to sell as tourist souvenirs visitors leaving Australia would take a pair home as a novelty item.

Surfer Adoption in the 1960s–70s

Australian surfers started wearing sheepskin boots to warm their feet after cold early-morning sessions in the water.

The boots weren't glamorous they were functional and cheap. That surfing connection is genuinely part of the boot's DNA, not a marketing add-on.

Brian Smith and the US Market (1978)

In the late 1970s, an Australian surfer named Brian Smith brought sheepskin boots to Southern California and began selling them to the surfing community there. He formally founded the UGG brand in 1978 alongside business partner Doug Jensen.

The early years were slow their first season reportedly moved just 28 pairs. Smith persisted, selling through surf shops along the California coast.

Deckers Acquisition and Mainstream Growth (1995–2000s)

According to Wikipedia's profile of the UGG brand, Deckers Brands acquired the UGG business in 1995 for $14.6 million USD. Under Deckers, UGG expanded its distribution, entered department stores, and began targeting a broader audience.

The brand gained significant visibility when American celebrities most notably Oprah Winfrey wore and publicly endorsed UGG boots in the early 2000s. That visibility pulled the boot out of surf culture and into mainstream fashion.

From there, UGG expanded into slippers, sneakers, apparel, and home goods, positioning itself as a lifestyle brand rather than a footwear-only label.

Types of UGG Products Available Today

UGG has grown well beyond the classic sheepskin boot.

Here is a clear overview of what the brand currently offers:

Product Category	Key Styles	Primary Use
Classic Boots	Tall, Short, Mini, Ultra Mini	Cold-weather everyday wear
Slippers	Tasman, Scuffette, Coquette	Indoor and casual outdoor use
Sneakers	CA805, Lowmel, Goldenstar	Casual everyday footwear
Sandals	Goleta, Capitola, Disco Slide	Warm-weather wear
Apparel	Robes, loungewear, knitwear	Comfort and at-home wear
Home Goods	Throws, pillows, décor	Home comfort products

The Classic Boot remains the most recognised product. The Mini and Ultra Mini have grown in popularity more recently, particularly among younger buyers. Slippers like the Tasman have developed a separate following as a casual outdoor shoe.

Why Are UGGs So Popular?

Comfort is the obvious answer, but it's worth being a bit more specific about why these particular boots caught on so broadly.

The Indoor-Outdoor Crossover

UGGs occupy an unusual category. They are soft enough to wear indoors like a slipper but structured enough to wear outside.

That versatility especially in colder months is genuinely useful. People don't have to change footwear between being inside and running a quick errand.

Celebrity Visibility in the Early 2000s

The brand's growth in the early 2000s was significantly accelerated by celebrity wearing. Once UGGs became associated with casual off-duty dressing paparazzi shots of actors and musicians wearing them the boots acquired a cultural shorthand for comfortable, low-effort style. That association has stuck.

Comfort as a Fashion Position

Interestingly, UGGs became fashionable not by looking sharp but by being visibly comfortable.

They arrived at a moment when "normcore" and anti-fashion sensibilities were gaining traction in mainstream culture. Wearing something deliberately soft and casual became its own statement.

Practical Considerations Before Buying UGGs

Before spending on a pair, there are a few things worth knowing particularly around warmth, water resistance, and how long they realistically hold up.

Are UGGs Warm?

Yes, for moderate cold. The sheepskin lining provides genuine warmth in cool and cold conditions.

They are not rated for extreme cold or snow the way dedicated winter boots are. For temperatures well below freezing, a boot with structured insulation would serve better.

Are UGGs Waterproof?

No not naturally. Untreated sheepskin and suede absorb moisture and stain visibly. The brand sells its own UGG Sheepskin Water + Stain Repellent, and most buyers who wear UGGs regularly treat their boots before first use. Some newer styles include treated suede, but this varies by product.

How Long Do UGGs Typically Last?

With reasonable care keeping them dry, using a protective spray, and storing them properly in the off-season UGGs typically last two to five years with regular wear.

The sheepskin lining compresses over time with use, which affects the cushioning feel. In practice, many owners find the first few months offer the most pronounced comfort before the wool settles.

How to Care for UGGs

• Allow wet boots to dry naturally at room temperature never near direct heat
• Brush the suede with a soft suede brush when dry to restore the nap
• Use a cleaner specifically designed for sheepskin or suede
• Store stuffed with tissue paper to maintain the boot's shape in the off-season

Conclusion

UGGs are sheepskin boots warm, soft, and designed for comfort over performance. The name is both a global brand and, in Australia, a generic style.

Whether you're buying from Deckers or an Australian maker, what you're getting is fundamentally the same material concept, though quality and consistency will vary.

Frequently Asked Questions

Are UGGs Australian or American?

The boot style originated in Australia, worn by farmers and surfers. The UGG brand, however, is American founded in California in 1978 and owned today by Deckers Brands, a US company headquartered in Goleta, California.

What is the difference between UGG and ugg boots?

UGG (capitalised) is a registered brand owned by Deckers. "Ugg boot" (lowercase) is a generic term used in Australia to describe the sheepskin boot style. Multiple manufacturers make ugg boots legally in Australia under different brand names.

Are UGGs suitable for cold weather?

Yes, for mild to moderate cold. Sheepskin provides natural insulation, but UGGs are not rated for extreme winter conditions or deep snow. Treat them with a water repellent before use in wet or snowy weather.

Do UGGs use real sheepskin?

Classic UGG styles use genuine twin-faced sheepskin. The brand also produces synthetic alternatives clearly labelled on product pages. If real sheepskin is important to you, check the specific product description before purchasing.

Are UGGs worth the price?

That depends on how you use them. For everyday comfort wear in cooler months, most buyers find them durable enough to justify the cost over two to three seasons. If you need waterproof or heavy-duty boots, other options serve that purpose better.