Used for 15 years. Used since the children were toddlers. Faded due to aging. There are extensive stains from toddler bedwetting, but it has already been sun-dried. No odor. Used for 15 years even after getting dirty, but no sagging. Still durable and can be used for a long time. My child wants to buy new bedding for their new life, so I hesitated, but I'd like to offer this to someone who doesn't mind the appearance and is looking for a durable, back pain-focused mattress at a bargain price. I took plenty of photos, so please check the condition carefully and be satisfied before purchasing. It can also prevent bedsores, so how about for nursing care? It's breathable, so even if there's bedwetting, you can use it hygienically by sun-drying it. The stains will be hidden if you use sheets, so I'll include two new, dedicated sheets.