It's an old video, It looks like a balloon to me, but I have searched for a while but cannot find a similar balloon for sale. But it is very difficult to put in search terms for it.

It seems to be mostly matt and to have an irregular shaped transparent panel on one side probably for displaying something inside the balloon. It reflects the setting/rising sun as it rotates.

I have searched things like "helmet balloon" "transparent panel balloon" etc

There are many, many types of balloon and they can be custom made, for events etc. It's possible if you had the right keyword (possibly a kids tv show/movie/cartoon you could find similar balloons. But so far it's been pretty hard. Browsing the catalogues of large balloon specialists online shops seems to be the best way to get the variety, google is less useful.

Oh forgot to add when I was searching for Batman balloons the term "Airwalker Balloons" seems to come up a lot in relation to large non standard shaped balloons.

The term refers to balloons that are designed to have the option to achieve neutral buoyancy and move around the room at floor level, like what we've seen with some of those "ghost/cryptid" videos.

But it can be a good search term for large unusual balloons, but be careful as not all balloons are Air Walkers

Very weird. Here's some stills that hopefully capture it better...

its possible what looks concave is just an optical illusion.

for mos tof the video it looks to me like a doe head with the nose pointed down. (not sure why people are saying it is green..so i'm trying to picture something green but having a hard time convincing my brain.)

could it be diamondish shape?

add: like these look concave int he pic, but obviously arent in real life

It's definitely wider in one axis than the other.
It looks olive/grey/green "military" green, seems matt because the sun reflection mostly happens on the transparent section.

These are the 2 side on views, left opaque, right transparent, allowing us to see inside the balloon.

This video seems to have a better stabilisation...

lol.. not the ufo, but how cute is this guy! ( i was looking quick for vintage xmas ornament shaped balloons)

I have been seeing that one for a time -- I had interpreted it as a sky lantern with the envelope starting to catch fire and burn. What puzzled me was, with what appeared to be a big gaping hole burned in the side, how it was holding its shape. Partially deflated mylar balloon catching setting or rising sun is probably a better explanation, unless somebody has a brilliant idea on the "how does it stay inflated with a big hole in the side" mystery.

I found this, which is roughly similar to what I was seeing while not quite being the usual sky lantern from China -- it does hold its shape during and after burning, but this would seem unlikely to persist as long as the video we're discussing.

Source: https://youtu.be/g4uoD3Sn1sc?t=42

If you want a nice chuckle today, head over to reddit. Some are claiminging with dry eyes that it is an alien pod, and some even see an alien.

Meaning: don't ever think they will believe us. Just no hope with the "I saw a speck of light in the sky, so I am convinced we are being visited, so every post from no on is real aliens" crowd.

tea

Yeah unless we hit jackpot and find the exact balloon, kite or lantern etc then this one will rumble on. It points to the issue of UFO shape regency bias, whatever the most recent "good" video is wins the this is what they look like award.

It is funny indeed that that crowd is going for the "aha! they cannot come up with a match, so we were right: it is aliens".
Okay, fair to say that there a thousands of users on that sub, so a mix of everything is what you expect. However, the ones that shout the loudest, seem to "win".

We're a victim of our own success, because we have come up with exact matches before (batman balloon, Chile, etc) now the expected standard is give us the product code of the balloon then, oh you can't it's aliens.

Inserted as Metabunk wont show webp

i see the alien in one or two frames. problem is there are more frames where we see the [alleged] inside nice and clear and he is not in there.

the sunlight and a partially deflated balloon from very far away cause all sorts of distortions.

this one appears to have a copper disk (or ornament top) at the bottom anda silver dogbone shape along the outer rim << this silver i think is what causes the alien (who looks green to me) in one or two frames.)

i still think the concave is a trick of the eye, but yea my grandma had ornaments sort of shaped like that blob with a cut out...
(couldnt find her exact ornaments but kinda like :

esp in spain i could see more ornate xmas type balloons.

or a wise man hat

And given that custom balloons are a thing, such as these almost-the-right-shaped ones made for an Asian restaurant, that will not always be possible.

Just listing some thoughts...

It's a helium filled balloon. The time of day is early morning or late afternoon. The Sun is up, but low on the horizon. The clouds seem to be storm clouds lit by a low Sun. It is windy. (Afternoon thunderstorm?)

Balloon is an irregular shape that doesn't seem to represent an object like a heart or a number. It is a flattened shape. It's partially clear and partially coated with a surface that produces diffuse reflections. The flashes are specular reflections of the Sun on the clear portions of the balloon.

It's not a seamless vinyl or latex balloon. It's a Mylar balloon with seams.

It seems to be this general type of balloon.

Notice that that these are dear balloons that are partially coated. They have seams. The coating produces diffuse reflections and the uncoated (clear) sections produce specular reflections.

These are described as

https://www.walmart.com/ip/Efavorma...lloons-For-Wedding-Party-Decoration/345396998

These balloons are mostly clear and partially coated while OP balloon is mostly coated and partially clear.

Another example of general type
https://www.partyrama.co.uk/rose-gold-trim-clear-anglez-foil-helium-balloon-63cm-25-in/

I think it's best to define what Mylar is.

http://mylarmistake.com/what-is-mylar/

Mylar is a clear plastic sheet. It may be layered with foil. Important because I think some people think Mylar IS a kind of foil.

It's a plastic sheet. Important because balloons made of Mylar are made of panels and have seams. Latex or vinyl balloons are one piece and have no seams.

I think the balloons I have linked to above have a non-reflective coating, coloring or tape, rather than a reflective foil layer.

Interesting - I had thought that the object was 'fortune cookie shaped' too, but then again.... I aslo thought it might have been a nose, a manatee, a walrus, a cocoon and a swaddled baby.

Not a silvered section, panel or ornament. It's a clear, uncoated, section of the balloon. The "silver" flashes are specular reflections of the Sun.

Here you can see the sky through the upper portion of the clear section and a flashing reflection of the low Sun on the lower part of the clear section. (As you would see flashes on the surface of clear glass or water.)

I believe this balloon is made of clear Mylar, but most of it is covered with a less reflective coating or tape, or a less reflective sandwiched layer.

I've also considered that.

It would have to be a surface layer of paint or dye, rather than a sandwiched layer of foil or dyed material.

Not necessarily a heart, but some custom shape as explained above.

This

I am in the foil sections of websites like this

https://gointernational.co.uk/

Important to realize, as I said in the above post - https://www.metabunk.org/threads/to...-the-top-voted-of-all-time.12375/#post-268833

Mylar is not foil. Mylar is a clear plastic sheet that can be sandwiched with foil.

But how are these types of custom balloons produced?

If the decorations are printed on a sandwiched layer, then our notion is not valid.

But if these balloons are stamped, sprayed, coated, dyed... whatever... with a surface layer... and if that surface layer should come off... the Mylar below it is clear.

Very few balloons are purposely made that way. But it might happen accidently.

I understand, but the clear mylar balloons are in the foil section on the websites. Because that's how they organise stuff.

They seem to commonly come in heart, star and round versions. Even name for the sort of rounded triangle shape we see might help searches. The diamond ones are just not quite the right shape.

But I think this is a custom Mylar balloon that was purposely made with a clear section. It's decorative/artsy.

BTW, I think it's shaped like a cartoon steak.

The first thing I searched for is "meat balloons" And I found some!

Or maybe a chicken nugget?

Sorry, these are pillows...

I was thinking chicken leg "drumstick," I also found this shape intriguing: