MetaMask is an Ethereum wallet that allows anyone to interact with decentralized applications on the Ethereum blockchain. The wallet acts as a plugin extension for your browser. Once it's installed on your browser, it acts as your portal to the Ethereum Network, and can store any assets which you might acquire. Examples of such assets would be VALOR, an ERC20 token, or any of the NFTs for sale on VALOR Prime.   

Learn more about MetaMask here.