Casper is probably the best known mail-order mattress, and for good reason. The New York City-based company, founded in 2014, has grown quickly and substantially in two years. Its founders believe that the only way to know whether a mattress is truly comfortable is by sleeping on it — so they offer a 100-day trial period. Designed and produced in the USA, it's also known for its fun ads, which New Yorkers will recognize from the subways. It only offers one type and firmness of mattress, which is made of memory foam.
Verdict: Most customers agree that the Casper is good for lovers of both soft and firm mattresses. Some have even reported that it relieves back and neck pain, and people are impressed with the easy delivery and unboxing. Overall, customers seem pretty happy with the mattress, though a few reviewers admit to being underwhelmed.
Cost: $500 (twin) to $950 (California king)
Trial Period: 100 days
Warranty: 10 years
