If you're wondering, "What is the best wallet for DOT?" You will be happy to hear that there are several teams developing wallets for DOT tokens at the moment, including cold storage (offline) options. 

Some are already live, others are still being built. Polkadot is still a very young network. Please refer to our Wiki for a list of supported wallets. If you have any questions about those wallets, please contact the developer teams directly.

The following wallets have been developed by Parity and you can contact us if you need any support: 

Hardware Wallets

If you are looking for a hardware solution, the Ledger wallet supports Polkadot.

Another secure option is to install Parity Signer on an old smartphone which you no longer connect to the internet. This also works as offline (cold) storage and is explained in the video abo 

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