The Night Therapy Spring 13 Inch Deluxe Euro Box Top Spring Mattress by Zinus is an exceptional mattress that offers both customized support and luxurious comfort. This mattress features reduced motion transfer from a sleeping partner, while maintaining customized spinal alignment. The Pressure Relieving Comfort Foam and Fiber Quilted Cover of the Euro Box Top, additional layers of High-density Foam and Pressure Relieving Comfort Foam add exceptional comfort to this mattress. The 7.5 Pocketed Springs provide the support and a comfortable and healthy night’s sleep. Please open your mattress package within 72 hours of receipt and allow 48 hours for your new mattress to return to its original, plush shape. Worry free 10 year limited warranty. Another comfort innovation from Zinus. Pioneering comfort.