Sevylor Covered River Tube Heavy-duty PVC construction is rugged for lake use Multiple air chambers allow the other chambers to stay inflated if one is punctured Nylon cover provides durable protection from punctures Airtight System is guaranteed not to leak Snap N Stay System connects Sevylor products together Double Lock valve uses two locking points for easy inflation/deflation Cup holder keeps your drink close at hand Fits one person Inflated diameter: 47 in. 30 day limited warranty