We've tested dozens of mattresses from the internet's most popular sleep startups — here's the difference between them, including what they offer and what you'll need to consider before buying

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Here is a comparison of nine popular online mattress companies like Casper, Leesa, Bear, and more.

Each one has a 90- or 100-night risk-free trial, free shipping and returns, and a 10-year warranty.

Learn more about the best mattresses, the best sheets, and pillows you can buy.

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The fact that buying a new mattress no longer requires driving to a showroom and spending a few hours testing a dozen options under fluorescent lights is a perk of modern life. What used to be a tedious afternoon has been simplified to a few clicks.

The explosion of online mattress startups means we can try out beds in the comfort of our homes and skip the prices that accompany brick-and-mortar stores. But, while the mattresses you can buy online are typically cheaper, more convenient, and often better, it can be difficult to distinguish which mattress is best for your needs. Keeping that in mind, we've broken it down for you.

Below are nine popular online mattress retailers and a cheat sheet comparing the features of each one's offerings.

All nine mattress retailers offer:

A 10-year warranty

Free shipping and easy returns

A generous 90- or 100-night sleep trial (Tempur-Pedic offers 90, most offer 100)

Once you settle on a mattress, you can treat yourself to a new set of sheets for a job well done.