We put Ugg's bestselling slippers to the test, and they're every bit as comfortable as you'd expect — but you'll want to be careful with the sizing

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• Ugg is known for making high-quality, comfortable footwear, especially when it comes to slippers.
• We tried some of the brand's most popular slipper styles for men and women to see how they fared.
• For the amount of style and comfort you get, we think they're worth the price. You can also check out our guide to the best slippers for men and women for more options.

Whenever I see a pair of sheepskin slippers or boots, I just assume they're Uggs. The ubiquitous brand is known and loved for its plush shoes that make your feet feel like they're being wrapped in a warm hug.

I grew up seeing people trot around in Uggs during the cold winter months in New England, but the brand actually got its start in a completely different climate. Ugg was founded in 1978 by Brian Smith, an Australian living in Southern California, as an homage to sheepskin — a commonly used material in his home country. With a focus on being comfortable, relaxed, and casual, Ugg embodied Southern California surf culture and became a fan-favorite brand along the coast. Since its inception, Ugg has expanded into new colors and styles and has been featured several times as one of Oprah's Favorite Things.

Uggs are on the pricier side when it comes to slippers and casual footwear, but you're paying for the quality — I've owned multiple pairs of Uggs that have lasted for over 10 years. I know you're probably thinking it's kind of gross that I've kept them for that long, but I think it really speaks to the quality of the shoes.

If you're interested in learning more on how Ugg sources its materials, you can read about it here. For what it's worth, the company says it only uses sheepskin that comes as a byproduct of other industries.

Some of the most popular Ugg styles are slippers, so we on the Insider Reviews team wanted to see how they compare with our other favorite slipper brands. We tested a few of the bestsellers for men and women and found, unsurprisingly, that they're extremely comfortable once you get the sizing right. You can read our full reviews below, or head to Zappos or Ugg to get a pair of your own.

Amir Ismael, style and grooming reporter: Ascot, $109.95 and Tasman, $99.95

The UGG Ascot is a stylish driving shoe-style slipper designed for comfort. It's made from genuine sheepskin with a shearling lining on the full interior of the shoe. As the first pair of UGGs I've owned, I was very pleased with the quality of the material, but they were unfortunately too small. I ordered my true size and found them to be unbearably tight. It's worth noting that any shoe with a shearling lining will loosen up marginally with wear, but I — along with many other reviewers on Zappos — found the true size to be too small. I'd recommend going up a full size.

I ended up exchanging the Ascots for the other bestselling men's shoe from UGG, the Tasman slippers. This time, I went a full size up from my normal size and they fit well with or without socks. For now, I've been enjoying them around the house with no socks, but I'm sure they'll become a part of my casual fall shoe rotation because of the warm and cozy shearling lining. In terms of aesthetics, the braided border around the shoe makes the UGG Tasmans a bit more stylish.

Ashley Phillips, style and beauty editor: Coquette, $119.95

The first pair of Ugg slippers I owned was a driver style, and they quickly found themselves collecting dust because of the too-snug fit that Amir mentioned above. I'd actually been meaning to replace them with one of Ugg's slide-on pairs for years, but never got around to it. Once I put on the Coquette for the first time, I realized I'd made a huge mistake in not doing it sooner.

Unlike the drivers, these are cozy and plush without suffocating my feet. I also really like the rubber lug sole because it lets me walk outside to sit on the patio or check the mail without thinking twice about switching shoes. I usually order down a size with Ugg, but this time I ordered up a size to leave some extra room, and it was the right choice. I've been wearing these all day, every day for the past month and I don't see that changing any time soon.

Remi Rosmarin, style and beauty reporter: Ansley, $99.95

Growing up, I had a pair of Ugg Tasman slippers. I loved them so much I wore them until the inner sole was matted and the embroidered trim was unraveling. I was sad to see them go, but all the more excited to try the Ansley — another bestselling pair.

From first wear, the inside of the Ansley was superbly plush. Just slipping your feet inside feels luxurious, something I think you'll feel with any pair of Uggs in the beginning. They're great for lounging around in your house. However, I did find these to run a bit small. I ordered them in my usual size and they felt a bit tight, though I know they will stretch out a little because they're made of sheepskin. If you have wider feet or really don't like the feel of a more fitted slipper, I'd suggest going up a size.

I like the classic driver style of the Ansley because it covers your feet enough to go outside and pick up the paper on a chilly day. But, if you're looking for more of an indoor-outdoor slipper, I would suggest the Tasman. It has a thicker sole which makes it more equipped for time spent outdoors. I think both styles are worth the price based on how often I wear slippers, but if you don't want to spend this much and still want a great pair, I'd also suggest checking out Minnetonka.

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