NYC start-up sells a mattress in a box

Sick of going to sleazy showrooms to shop around for a mattress? Have no idea how to get a king-sized bed up to a fourth floor walk-up? A New York City-based start-up is trying to change that.

Meet the faces behind Casper, the new company that dreams of shaking up the mattress industry and helping everyone get a better night's sleep. CEO and co-founder Philip Krim claims Casper is the most comfortable bed ever created. Krim and COO Neil Parikh founded the company with three partners exactly one year ago. They sell a single mattress model and deliver it in a box that's easy to get into your apartment or up the stairs.

So how does Casper work? Order a mattress online and if you live in NYC, they'll deliver it that day by cargo bike or courier service. The bed comes compressed in a box that's a little bigger than a mini-fridge.

If you live outside the city, Casper will ship your bed through UPS.

A twin-sized Casper costs $500. Their biggest bed, a California king, runs $950.

And these beds in a box are selling fast. Parikh says they did $100,000 in sales in their first day alone, and business has been busy ever since. Krim says they've done $20 million in sales in their first 10 months in business.

They're also building a celebrity following. Kylie Jenner has a Casper in her new home. Ashton Kutcher and rapper NAS are investors.

Not sure about buying a mattress online? You can visit Casper's modern showrooms in Manhattan or Los Angeles to test them out. And the company offers a money-back guarantee. You have 100 days to try out your Casper mattress. If you don't like it during that time, they'll come to your house, pick it up, and give you all of your money back. It also comes with a 10-year warranty.

But the guys at Casper don't think you'll want to send it back. They believe they've designed the perfect mattress.

Parikh says a Casper mattress feels both supportive and like you're floating, thanks to two materials: memory foam and latex. By adding the latex, Parikh says you're actually sleeping on the top of the mattress rather than in it.

Since latex is more breathable than memory foam, it sleeps a lot cooler and is also bouncier for everything else you do in the bedroom!