How is it possible to have a bitcoin wallet offline?

[Felix Felicis]

I've also heard about bitcoin wallets offline, but I don't really understand how it works, and I've heard that offline bitcoin wallets are very safe.

Yes, indeed they are! You won't find any safer wallet than these offline wallets. The reason lies behind this simple fact:
Online wallets, most of the time, store your private keys. These private keys are actually stored on an online server (which you can imagine how safe it'll be).
The thing with offline wallets is that they store your private keys and don't require to be connected to the internet all the time (for hardware wallets). (For paper wallets, it'll never be connected as it's literally a piece of paper).
As most of the hacks and malware and viruses are transferred over the internet, you won't have to worry about them infecting your offline wallets.

[masudginanjar]

In fact, as of this month, internet is no longer required to send Bitcoin transactions. Given you don't need to be online to create the transaction (you can create the signed transaction offline, which is already quite common), you can now send this transaction via radio waves even.

Very helpful for this article and this needs extra testing to be safe in Bitcoin transactions using Radio waves.
Indirectly, if radio waves are very risky to be plowed, like in my country, there are many radio waves that are misused for commercial purposes.

[Delgboke]

Having a Bitcoin wallet offline could be a great ideal but I don't know how possible that could be in the blockchain industries for making it available for the security reasons, I think we should campaign for it to be created but if is to be created can it accept all crypto coins I think this offline wallet should be good for crypto exchanges it will be of more help against scammers.

[alfatih99]

I think there is indeed an offline bitcoin wallet for storing your bitcoin, but I don't know too much about offline bitcoin wallets.

[AltLogan]

I would recommend you Trezor. It is the best option for me, hardly see any drawbacks. High level of security, many different kinds of cryptocurrencies support and ability to work offline.

[sampoerna]

If you want a Bitcoin wallet that is offline, you will need to buy a hardware wallet such as a Trezor or Ledger Nano S.

Yes, the answer is hard wallets. There are some choices, for the examples are Trezor or Ledger Nano. I think it is already clear enough for the answer to the question above. I suggest OP to close the thread because there are already some correct answers.