The tub’s internal lining is actually a resilient PVC which you’ll have a tough time puncturing, and it even comes with a cover to keep bugs, Grime, as well as other nasties out of one's water in case you don’t come to feel like draining it soon after just about http://www.northlandhq.com/directory/listingdisplay.aspx?lid=34809#.Y-CqR3a9thE