Duroflex Boltt 3 Zoned NRG Layer Medium Firm King Size 7 inch Bonnell Spring Mattress with Extra Air Circulation and Coolness (7 inch, King Size, 72 x 72)

"Optimum body support meets the sturdiness and bounce of bonnell spring in Duroflex Bolte Mattress. Designed for incredible zonal support, our 3 Zoned Copper Infused NRG Layer makes achieving the perfect sleeping posture a breeze. The smart grooves in the special 3 Zoned NRG Layer along with Copper infusion enable better air circulation keeping the mattress fresh and cool. All this is enhanced by the Anti Stress Technology in the knitted fabric, designed to repel negative ions from your body, leaving you positively energised. Sustainability Score: Bolte is made using fabric composing comprising 40% recycled yarns (from used PET bottles) along with recyclable packaging and bonnell springs which are easy to recycle."