You send: Solana
SOL is the native asset of Solana, a high-throughput blockchain with sub-second block times and very low fees. It pays for transactions and is staked to secure the network. More about Solana.
On this pair it moves over Solana — an address there 32 to 44 characters, no 0x prefix.
SOL also exists on other networks — different addresses, not interchangeable: BEP20, ERC20.

