1-1/2" ID 19mm Thick 6 Ft Super Nitrile Rubber Pipe Insulation R2.9 Water Resistant

If you are looking for pipe insulation to make your own RV waterhose insulated pipe and heater element, this is the BEST insulation part to get. Its thick enough to withstand harsh outdoor environment, flexible enough to still roll-up with the hose and element inside, and the diameter is large enough to get the hose end through without damaging the insulation. I recommend Velcro straps at each end of the 6' segments, and as many segments as you need for the length of your hose.

Easy to fit. I'll tell you how good it is when the cold weather arrives.

I used this to replace protective cushioning on trampoline surround. Fit like a glove. Slipped over pipe without slop or resistance. Don’t know how but it fit perfect.

Needed to be split on one side to help with installation

Tell the cold no no with this excellent insulation. Top line

Had to wait for winter time but not only is it cheap but now I spend far less time waiting for my hot water to run through my faucets great investment simple install and is saving me on my electric and water bills overall

Really improved performance and stock material was worn pout

The item description was written in such a manner to mislead (likely by mistake). The convention for pipe insulation marketing is to describe it by its internal diameter not it's external diameter. The heading description for this item is "1 1/2 inch" but that refers the external diameter. I am now stuck with an item that cannot use and costs more to send back than it did to buy.