The SereneLife Hospital Bed Air Mattress Bubble Pad Mattress with Electric Air Pump Medical Grade Bubble Pad Air Mattress Breathable Air Channels for Maximum Back Comfort Easy Set Up: Automatic Air Pump for Inflating and Deflating Micro Air Holes Prevents Bed Sores, Diffuse Sweat and Back Pressure Lightweight, Portable and Easy to Store What’s in the Box: Air Mattress Electric Air Pump Puncture Repair Kit Power Cord Technical Specs: Pressure Range: 70 130mmHg Air Output: 6 7 Litres/min Cycle Time: 6 min Mattress Maximum Support Weight: 330 lbs. Construction Material: Medical Grade PVC Material Thickness: 30mm.