The Nikken Kenko Sleep System has no coil springs.

The Kenko™ Naturest Mattress Topper features a firm yet yielding surface that provides the correct degree of support. It also includes a passive-massage layer to provide additional support and a gentle massage effect.

Kenko Sleep Technology:

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