https://world-news.wiki/wiki/T....en_Orthopedic_Mattre
Double Pocket Spring Mattresses A good double pocket-sprung mattress will usually have between 1000 and 2000 springs. Heavier people may benefit from a higher number of springs. Find a model with natural fillings to provide exceptional comfort and breathability. Also, opt for a design with two sides that allows the rotation and turning of the calendar each month to ensure a uniform wear. Comfort The solitary movement of pocket springs helps the mattress to conform precisely to your body