1. Open the Metamask App, and click on Menu

2. Then, click on Settings, and select Networks

3. Select Add Network

4. Input the respective information into the fields below:

Network name: Polygon Mainnet

RPC URL: https://polygon-rpc.com/

Chain ID: 137

Symbol: MATIC

Block Explorer URL: https://polygonscan.com

Need additional help? Please contact MetaMask Customer Service directly.