Although the best mattresses feel as soft as clouds, the worst mattresses are clouds, which send sleepers plummeting back to Earth. Rest on firmer billows with today's Groupon to Nasa Memory Foam of Palm Beach in West Palm Beach. Choose from the following options, all of which include taxes and shipping:

• For $250, you get a full-size 6-inch memory-foam mattress (a $656.14 value).
• For $299, you get a queen-size 6-inch memory-foam mattress (a $677.34 value).
• For $359, you get a king-size 6-inch memory-foam mattress (a $719.74 value).
  
  

Nasa Memory Foam of Palm Beach eases customers into a more satisfying slumber with an array of American-made memory-foam mattresses, all backed by a 30-day, no-questions-asked guarantee. Two layers of form-hugging foam comprise each 6-inch mattress for a healthy balance of softness and support, including a 4-inch firm base and a cushier 2-inch top, adhered to each other by a wholesome spread of feather-light marshmallow fluff. Originally utilized in NASA airplane seats during the 1960s, the pliable, cushioned slices unburden dozers' pressure points by distributing heat and body weight evenly across their surfaces. Snug in hypoallergenic nests, sleepers can make the migration to dream territory in better time without worrying about freeloading dust mites.

Clients in pursuit of added softness can upgrade their 6-inch mattress to an 8-inch, 10-inch, or 12-inch model for an additional fee. Each mattress arrives with complete assembly instructions, as well as a complimentary deadfall trap for overzealous tooth fairies.