Coinbase (COINB) is now making available to U.S. customers its Coinbase Card, a debit card allowing them to spend cryptocurrencies anywhere Visa (V) is accepted.It's not the first crypto debit card, but this one is unique in that it allows funds to be drawn directly from the customer's Coinbase account (as opposed to having to first load funds onto the card).There's also a rewards program, with users able to choose either 4% back in Stellar Lumen (XLM-USD) or 1% back in Bitcoin (BTC-USD).For now, customers will have to join a waitlist. It's Coinbase's hope to have the first users approved this winter.The card is already in use in Europe.