wowttrelax Memory Foam Mattress, 3ft Single Mattress, Medium Firm, Soft Skin-friendly Durable, Breathable Comfort Sleep, Back Pain Support (90x190x20cm)4CM Gel Memory Foam Layer The WOWTTRELAX memory mattress is designed with a two layer full foam system, the gel memory foam layer is a gentle and considerate mattress layer, moulding itself to your body and moulding itself to your contours. It reduces pressure points on your body so you feel like you're floating on air. It relieves your fatigue and stress, leaving you feeling relaxed and at ease, and enjoying a better quality of sleep. 16CM High