Opened for photography, but unused. The box has some damage. Material Composition: Polyvinyl Chloride Size: Length 200cm, Width 90cm, Height 70mm. Care Instructions: Spot clean only 【Operating Principle】This product has two types of air cushions, "A" and "B". When the product is operating, there are three states: ① Group A air cushions inflate, and Group B air cushions deflate. ② Group B air cushions inflate, and Group A air cushions deflate. ③ Groups A and B air cushions inflate simultaneously. By cyclically switching between these three states (12-minute cycle), the pressure points are changed to avoid long-term pressure on the body. 【Quiet Air Pump】When the air pump is operating, the low noise (≤45 decibels) will not affect the patient's rest. The operating power can be freely adjusted, allowing you to change the softness of the air cushion by adjusting the air pump. There is a hook on the back of the air pump, allowing it to be hung on a table or bed. 【Air Cushion Material】The air cushion is made using fully automatic integrated high-temperature hot-press technology, making it durable, well-sealed, and leak-proof. High-quality soft PVC fabric is used, providing a better fit, gentle on the skin, and harmless to the body. It is odorless, breathable, non-sticky, and keeps the skin dry. Please avoid puncturing the surface with sharp objects during use. 【Product Specifications】Air cushion load capacity: ≤135kg. The sides of the air cushion are extended by 38cm each, allowing them to be tucked under the mattress to secure the air cushion. Air pump inflation pressure (kPa): ≧15kPa (115mmHg). Air pump flow rate (L/min): ≧5L/min. 【Important Notes】When using the air mattress, avoid contact with sharp objects. This may cause air leaks due to damage. Alternating Pressure Pad with Electric Pump - Ideal for long-term bedridden users - Suitable for home use - Breathable - Pressure-relieving air mattress - Nursing care supplies - 3-mode cycle - Bedding - With Japanese instruction manual - Mattress