Coleman(r)patented Airtight(r)System guaranteed not to leak! The Airtight System starts with an exclusive Double Lock Valve(tm) that locks air in twice. Valve opens extra wide for quick and easy inflation and deflation. Incorporated into this design is a PVC layer that is 15% more puncture resistant than the leading brand. A sturdy coil design adds more strength, firmness and comfort than beam construction. 3-Person 680 lbs. cap. 20.5-gauge PVC, 100"X46"