How to bridge from Polygon zkEVM to arbitrum?

Could you please explain in detail how one can bridge assets from Polygon's zkEVM to Arbitrum? Are there any specific steps or tools required to facilitate this transfer? What are the potential challenges or considerations that one should be aware of when making such a bridge? Additionally, how do the transaction fees and speed of this process compare to other bridging methods? Is there a preferred approach or best practice when it comes to bridging assets between these two networks?