Do a websearch for this product. You will get plenty of hits.
The real question is whether this product (with its added cost) will provide any energy cost reductions by using it.
That answer will depend upon where you live and what type roof system you have.
If you have a conventional ventilated attic with adequate attic floor insulation, then this product will offer no benefit in energy savings. It may keep your attic a few degrees cooler but won’t save you money on cooling costs.
If you have habitable space directly under the roof rafters (such as in a cape cod style house) using this reflective barrier “may” keep the habitable space somewhat cooler thereby saving you a few dollars in energy savings.
All that depends, too, on where you live. If you are in the South where summers can be extremely hot, the prduct can make sense. In the north, it won’t help enough to be of any benefit.
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