Kenko Sleep Technology solves the problem

The Nikken Kenko Sleep System has no coil springs.

The KenkoAire™ Mattress features adjustable support that lets you sleep on a cushion of air. The Kenko™ Dream Light Pad mattress topper employs viscoelastic “memory foam.” 

Every Kenko Sleep System mattress or mattress topper also includes a layer of Rubberthane to provide additional support and a gentle, passive massage effect.

Kenko Sleep Technology:

• Eliminates high-stress pressure points -
• Promotes better circulation -
• Reduces tossing and turning -
• And provides a sleep environment more conducive to relaxing, restorative deep sleep.