Silentnight Healthy Growth Astro Eco 600 Pocket Mattress - UK Double

• Sleep surface. A breathable quilted sleep surface, which means a soft first point of contact that lets air circulate rather than trapping warmth.
• Support system. 600 Mirapocket springs providing zoned support, which Silentnight states is scientifically proven to improve spinal alignment and posture. Each spring moves independently, so support follows the body's shape.
• Comfort layer. Breathable EcoComfort Fibres designed for cooler sleep, helpful if your child tends to overheat at night.

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