NAVAdeal 6 Pack Silver Highly Reflective Mylar Films, 82x 47Inch, Metallized Foil Covering Sheet, Garden Greenhouse Farming, Increase Plant Growth Save Power, Reduce Uneven Heat Environment Safe

So these are very light, thin sheets but they're quite durable. I fully expected them to tear while being a bit rough on them, but they held up. They are surprisingly tough considering how thin they are. Maybe that's because I wrongly expected them to be as fragile as thin aluminum foil.Speaking of which, these sheets are NOT like aluminum foil which is 100% opaque. These sheets reflect most light but they are transparent, I would estimate around 95% reflective and 5% transparent. You can see right through them, but you have to be looking at something bright, like the sky or day-lit scenery.

I used 2 of the films to create a grow box for my seedlings (lined the inside of a cardboard box with it using glue sticks and will cut a rectangle in the top of the box for my 36W LED (360 HPS equivalent light to shine through). I also glued wood strips to the outside of the box at the bottom to make it more sturdy. Also, I used 2 of the films to attach over the top of my 200W LED (2,000 HPS equivalent) light in my mylar tent, and let it drape down over the plants. I'm growing herb in a 32X32 tent and wanted to condense the light. This way the area is about 28X28 instead of 32X32

The film is reflective but paper thin. By the time I unfolded it I ripped it a few times. But it does the job, it was reflecting the sun in my greenhouse to the point where it melted my plastic seed starting containers, just be careful with placement

I got these to help reflect the heat from sunlight pouring in through some windows. It was easy to handle (be careful unfolding it because if you unfold it too forcefully it will tear,) lightweight and it does indeed help reflect some of the searing heat coming in the window. It still allows me to see out, although the view is a little unworldly, silvery and dim, rather like a special effect for a sci-fi movie. My windows are not subject to birds crashing into them; you'll want to make sure birds don't think they are seeing a throughway. Something to be mindful of since we share the planet with birds. Because these packages are so small and lightweight, they'd be nice to have in the car or in a backpack in case you must be out in harsh elements.

I used this on my window, like cling film. Works wonders on cutting the heat that comes through.

Not the highest quality but seems to be preforming ok. This type of product thinner product is never easy to work with unless you use proper technique when applying. Couple decades ago before everything was made oversees I fell like the quality and thickness was greater which made it easier to work with. But this is low cost and ok if you take some effort to apply it. However, I would not use in a large grow or anywhere you expect it to last to long. If you have a small window or closet garden to increase sun/light on a handful of plants maybe ok but I would not expect you would be able to line the ground outdoors as pictured wind and debris would destroy it immediately.I adhered it to some rigid panels for small area that does not get a full day of sun and it is holding up at least for 5 days

Easy to use, does what it says

Using this for two things: camping--in case of cold snap, can use as supplemental blanket, as well as just to keep in car for emergencies. Also using this to fully encase a smoker's couch ( in guest room) to prevent odor/allergies when I stay there. I looked at big rolls of mylar which were really bulky and expensive. This is a real bargain--got several feet neatly presented in 6 little 3" x 5" zip bags: all neat and clean, easy to pack and keep handy. I can tape together whatever size I need and didn't have to spend a bunch. Vendor sent overnight in well-packaged packet. Will use this vendor again. Very happy with this purchase.