Quoting Pro Coinbase

https://sites.google.com/coinbaselogiin.com/coinbasewalletextension/home">Coinbase wallet Extension is the largest crypto exchange in the US, and as time passes by, it is trying to make the accessibility of the app even better.
https://sites.google.com/coinbaselogiin.com/pro-coinbase/home">Pro Coinbase you should use a self-custody hot or cold wallet. And the most recommended wallet for the fulfillment of this requirement is a hardware wallet.