The Sleep Sound Guarantee® is a unique set of benefits offered to our customers to ensure that: Our price is always competitive. We'll match or beat* any authorized retailer price both advertised and privately quoted. You're assured intimate, personal use items such as mattresses, pillows, bedding and towels are always provided to you brand new, unused and unwashed. Our Zippered Forever Bed™ program offers problem-solving mattresses constructed from modular materials to be maintained, adjusted and replaced for the entire lifetime of your mattress and not simply during a limited trial period.
The first coil system developed specifically for use in a mattress was invented by British-Canadian James Marshall. Called the Marshall spring, the first mattress coil system was—even by today’s standards—very advanced: the coils are individually wrapped in fabric, and arranged by hand in a honeycomb nested pattern. This allows the coils to move independently and to operate without gaps in the support system.