Yes, actually, I was thinking of Pelican - I think they were the original waterproof acrylic cases.
But Otter, as well, makes similar products and has for years. It's where their name comes from. (Waterproof.) Otter subsequently found a bigger niche in rugged and waterproof phone cases with a slimmer (and increasingly more-slimmer and less-protective) profile.
It doesn't have to be "made for your Macbook". It comes with foam, from which you cut out blocks to fit... whatever.
A Zero-Halliburtan case would be overkill:
https://gizmodo.com/236430/test-assaulting-zero-halliburtons-aircraft-aluminum-laptop-case/
and would itself be subject to cosmetic damage, but might draw suspicion. Especially if equipped with optional handcuffs.
BTW, it appears that those who want/need to carry a laptop are between a rock and a hard place. I noticed in the news today that American Airlines is banning "smart luggage" (suitcases with lithium-ion batteries and USB ports) in cargo hold starting sometime next year. They can be carried in cargo if the battery is removed (some are removable, some are not) or taken in the cabin. Or the suitcase can be taken in the cabin. If they are banning luggage that have Li-Ion batteries, the end-is-nigh for laptops.
So, the trend is going to be toward no laptops in cargo due to battery concerns, and no laptops in cabin due to bombs-instead-of-batteries concerns. I see a great future in the rent-a-laptop-at-the-airport business. (feasible if you use iCloud or similar).
The concern about batteries is not so much explosion (though they can expand, and sometimes violently, but briefly) - I had an AR.Drone battery expand while in the charger, and left a little black mark on the wall overnight - and my older 2008 Macbook cheap Chinese replacement removable battery expanded, bulging the cover slightly) but more about over-heating and combusting adjacent material. FWIW, I am an app developer - I had to abandon a project using iPhones to detect sleep apnea, because we realized there would be a liability problem suggesting that people sleep with an iPhone strapped to their stomach! (We stowed it in a "sports wallet" - think slim fanny pack). There have been too many incidences of people falling asleep with a phone and having the phone set the bedding on fire. (BTW, the sensors in the iPhone are perfectly capable of detecting breathing patterns (AND, as we were surprised to discover) heartbeat - it's just unsafe to use it for that purpose unless monitored.)
Sorry to say, the sleeve you posted is unlikely to protect your Macbook from cosmetic damage if in the overhead and the plane goes bump-in-the-night. My Macbook was in a similar sleeve. I think it hit the overhead hinge. Put it in the seat pocket! Snap the snaps, if the pocket has snaps.
Hard drives are a concern. If you have SSD, don't sweat it. Just cover any dings with a sticker.
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When i bought Mac back from Hong Kong all i had to to was sign a desecration
I *hope* you actually meant "a DECLARATION".
