Comfortable & Sturdy: Featuring water-resistant and skin-friendly flocking and PVC double-layer structure, blow up mattress provides you the ultimate comfort. Double-sided thickened mattress, 0.6mm thickness of the surface layer, can well withstand the sleeper weight. All-inclusive exterior prevents punctures and air leaks for long term use. Non-slip bottom increases stability and reduces sliding. Quick Inflation & Deflation: An easy-to-use internal pump quickly inflates the inflating mattress to full firmness in 2 minutes. You can turn on the switch and it will automatically deflate for storage in small space.