Lynn 1 Even though this product is called "mattress", it is actually not comparable with western mattresses. This one here is more like an inflatable bed which is just half inflated: way too soft, no resistance when you step or press on a single point. If you step on it your feet can feel the floor through the mattress. When you press on it you can feel the sharp springs inside the mattress. Sleeping on it is extremely uncomfortable, especially when you're used to western mattresses. I wake up with back pain every morning. I recommend to use a futon on the floor instead. Or even just a thick fittness mat is ok. Both is way cheaper and healthier than this "mattress".