9b5177fb_rn_Furniture_and_Modern_Design__Spring_Mattress
[0] Ventilation [Sonno Collection] Ventilation holes, designed as part of the three-zone comfort system-help circulate air for temperature moderation [Other Foam] The surface is intact - with no holes - preventing airflow and allowing heat to build up [Spring Mattress] 
Ventilation varies depending on mattress construction
Design Within Reach: The Best in Modern Furniture and Modern Design
Spring Mattress