What is the new thing that they provide? There are already tons of crypto debit cards. TokenCard, Tenx, Monaco Card and a lot more. Then why should I use that one?
You have to know the market is crowded with same products.
The thing that sets Centra apart is they accept multiple crypto (Bitcoin, Ethereum, Litecoin, Ripple, Dash, Zcash, & Monero. Next added token to be used will be Qtum and Bitcoin Cash in January) They have set it up so they can easily add new tokens and they will have ongoing community votes so you can vote your own crypto to be used.
Being able to use multiple crypto lets you skip the step of having to convert your crypto. Also any crypto you keep in the Centra wallet is insured from network hack and employee theft. This would have been great on the exchange that closed down recently from a hacker....