Medium is the level of support to the body, suitable for all average weighted people. This is not a comfort rating.
Open Coil are Bonnel springs in an hourglass shape, joined creating an open coiled mattress.
Fibre Fillings fillings are 100% polyester, man made, very durable, great recovery.
Handles Attached to the border, aiding rotation and turning of the mattress.
Vents Located on the border, allowing the mattress to breath and release damp air.
Two Sided Two sleeping sides, turn and rotate frequently.