Hypnos Natural Sanctuary Ortho Mattress - EU King

• Viscose Blend Breathable Sleep Surface. A soft viscose blend cover that promotes airflow, which means the sleep surface stays cooler and fresher through the night. It is the first thing you'll feel, and it softens the firm feel slightly.
• eOlus™ Fibres. These fibres offer resilient body support while letting air and moisture pass through easily. In practice, that means cushioning that springs back rather than trapping heat the way dense foam can.
• Sustainably Sourced Cotton. Natural cotton fibres are highly breathable and wick away excess moisture. If you're a hot sleeper, this is the layer doing much of the quiet work.
• ReActive™ 7-Turn Pocket Springs. Hypnos's ReActive 7-turn pocket spring system uses 1200 individually responsive springs that work independently to adapt to your body's shape. That means support that follows your spine rather than pushing back as one flat unit, and less motion transfer between partners.

Layer details from mattressnextday.co.uk product page, September 2026.