Response coils are individually wrapped to insulate movements so you don't disturb your bed partner.Wake up delighted to take on the day with this Gel-infused Cooling memory foam and innerspring coils that give you the best sleep of your life, every night. Designed to optimize comfort at the head,shoulders, hips, knees and ankles.Support Plus Pocket Spring Hybrid Mattress / Extra Firm Feel / Heavier Coils for Durable Support / Pocket Innersprings for Motion Isolation / Mattress-in-a-Box. The pocket springs act independently to follow the contours and movements of your body. Add to this, a thick layer of soft filling for even more luxury and comfort.