> For the complete documentation index, see [llms.txt](https://docs.earn.polynomial.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.earn.polynomial.fi/technical-implementation/deposit/deposit-on-optimism.md).
# Deposit on Optimism
The users can now deposit into the vaults,
1. Synthetic assets like sETH,sUSD, etc., to the respective Strategy vaults.
2. Deposit ETH and USDC on Optimism
#### Synthetic assets
The users can deposit synthetic assets from Synthetix directly into the vault. Synthetic assets like sETH,sUSD, etc, can be deposited according to the vault.
#### Deposit ETH and USDC on Optimism
Users can now deposit USDC and ETH directly into the vaults. The vault automatically converts the asset into a Synthetic asset through 1inch. The vault does the swap internally, and polynomial won't charge any fees for this.
Deposit flow of USDC deposit on Optimism
### Deposit flow for Synthetic assets
To deposit to the vaults, the user has to [approve](/technical-implementation/approve.md) the asset in the wallet.
After approval, users can enter the amount to deposit.
The popup will come after the successful deposit.
Since there is a min deposit time, users can see the progress of the deposit on the vault page.
After the min deposit time criteria, the vaults will process, and the user can view the positions in the position tab on the portfolio page.