• 1074 L&P 3-zone, pocketed coil spring system. 15.5 gauge coils at the head and foot, 14.5 gauge, nested coils across the center third of the mattress for lumbar support. The Pure Echo is handcrafted with all-natural, hypoallergenic materials, including organic cotton and natural wool for the deep, healthy sleep you deserve at a price that won’t keep you up at night.