# Dens ### Dens: Asset Wrappers

Each Den is an `ERC-20 TOKEN` smart contract vault that can hold a single or multiple assets weighted according to specified ratios. * **Immutable Fees:**\ Each Den has a set fee structure that cannot be changed once established. A special liquidity pair (Den LP) is also created on Kodiak for each Den. * **Fee Conversion:**\ All fees generated within the Den are converted into `ARBERA` and distributed to LP Stakers. * **ERC20 Tokens:**\ Dens are represented as programmable `ERC-20` receipt tokens, known as `brTOKEN`. ### Example: **Kodiak’s KDK token**: * A Den was explicitly created for the `KDK` token, denoted as `brKDK`. * A corresponding liquidity pair, `brKDK-HONEY` LP was also established on Kodiak DEX. This pair will trade against all available `KDK` liquidity on the chain.

In this setup, users can engage with the Den by wrapping their KDK tokens into `brKDK` and providing liquidity to the `brKDK-HONEY` LP, earning `ARBERA` buyback rewards, `BGT`, and more by contributing to the ecosystem.