Product review (5 stars): Outstanding, Heat/Cool Reflector. Works Quickly, Lightweight, Non-Itchy, Odorless, Easy To Install.
"Cool" This Reflective Insulation Is 24 inches (2 ft wide) in a roll that is 50 feet long. It's 3/16 of an inch thick. It kind of looks like mini bubble wrap, However, it's Extremely Dense. It's A Great design.
* One side is very reflective material, the other side is solid bright white. It's lightweight and easy to handle. It is Not "itchy" nor does it "sting". There's No Odor. Awesome! Worth every penny.
*  I'm turning my screened in porch into a functional mudroom.  I didn't want to go full on R13 insulation because this room is temporary Maybe. With this great materiel, who knows.
* It's a beautiful day in Northern California, 79 and sun shining through the clear "barn sheets" of the ceiling. 85 Degrees Inside.
* I climbed on a ladder, armed with my staple-gun, scissors and one end of the roll.
*  I placed the reflective side up towards the sun and the white part which shows, inside of my new room.
* I  was able to staple about a quarter inch on each of the rafters above me (apparently they were set on perfect 24 inch centers).
* As I continued from the corner inward about 3 feet,  I was in the Shade. Immediately, I noticed a drop in temperature. Awesome.  It works, Oh Boy it works quickly.
*  I just kept moving along. I finished a 10 x 10 room in about 15 minutes.
* I can tell this is going to keep the room cooler in Summer and warmer in Winter. Goodbye Porch, Hello Mudroom.
* I am a 56-year-old female. I'm not the fittest chip off the block but I do OK. I was able to handle this project, no help needed.
* In my pictures, the darker areas (that's the Ceiling) are where I stapled the material. They look a bit odd because the Sun was glaring.
* UPDATE: 10/19/17, We Got Our First Chilly Rain.  A Little Ceramic Heater Warmed Us Up  n About 15 Minutes.  Last Year We Never Could Get Warm  This Insulation Is A Blue Ribbon Winner.
* If you have any questions, click my user name, send email,  I will answer you.

* Hope This Info Helps. Thanks For Reading.