The vault deposits the beVELO in Beefy and farms for more beVELO. The earned beVELO is then deposited back into the Beefy farm. The transaction cost required to do all this is socialized among the vault's users.
beVELO is Beefy-wrapped VELO that earns more VELO over time. Beefy distributes trading fees and bribe rewards weekly to beVELO holders, swapping VELO to beVELO. beVELO holders receive the same rewards as max-locked veNFT VELO holders.