Mattress Forum

GreenSleep does not sell their toppers seperately.  They bring in limited raw materials into North America so they are really only interested in selling complete mattresses, and/or reserving the replacement toppers for existing GreenSleep customers.  It is not absolutely required to get a foundation, however the GreenSleep foundations do provide somewhat of a bottomless luxury feel to the mattress because it is an actual suspension system.  It will also potentially extend the life of the mattress somewhat over a rigid foundation. The foundation systems in the GreenSleep beds are set up default firmer in the centre third of the bed and the mattresses use a non-zoned spring system.  From my research on both GreenSleep as well as the other ultra high end brands, no one uses zoned springs.  The natural progressive rate of a spring to become fimer with compression automatically compensates for our heavier regions compressing the springs more in the centre third of the bed.  Biasing the spring rates further can sometimes be a detriment.