Setup MetaMask to connect to Matic Network
Switch the connected blockchain by clicking on the tab saying Main Ethereum Network, we need to add the Matic network. Scroll down until you find Custom RPC.
Enter in the Matic Mainnet settings as follows:
Network Name: Polygon
New RPC URL: https://polygon-rpc.com or
Block Explorer URL: https://polygonscan.com/
You have now connected to the Polygon / Matic mainnet with your Metamask Wallet!
Transactions on the Polygon network requires its native token MATIC which will be used as gas fee.