Features: -Materials: organic cotton knitted fabric cover, high-resilience memory foam, 6-turn triple tempered steel coil.-Includes: 1 x mattress.-Maximum airflow circulation design.-Adapts to all body types & sleep positions.-OEKO-Tex certified innovative silver-ions knitted fabric, gentle on skin.-Supportive memory foam for a comfortable sleeping experience.-Uses SyncCoil system which minimises motion transfer.-Certified by CertiPUR, CertiPUR-US, OEKO-Tex, & SGS.-Designed to be used on 1 side only.-Size: . Dimensions: -Overall Length - Top to Bottom (Size: Single): 188.-Overall Length - Top to Bottom (Size: King Single): 203.-Overall Length - Top to Bottom (Size: Double): 188.-Overall Length - Top to Bottom (Size: Queen): 203.-Overall Length - Top to Bottom (Size: King): 203.-Overall Width - Side to Side (Size: Single): 92.-Overall Width - Side to Side (Size: King Single): 107.-Overall Width - Side to Side (Size: Double): 138.-Overall Width - Side to Side (Size: Queen): 153.-Overall Width - Side to Side (Size: King): 183.-Overall Thickness (Size: Double): 16.-Overall Thickness (Size: King): 16.-Overall Thickness (Size: King Single): 16.-Overall Thickness (Size: Queen): 16.-Overall Thickness (Size: Single): 16.-Overall Product Weight (Size: Single): 12.2.-Overall Product Weight (Size: King Single): 15.07.-Overall Product Weight (Size: Double): 18.03.-Overall Product Weight (Size: Queen): 22.19.-Overall Product Weight (Size: King): 26.25.