Leather is an open-source, non-custodial wallet built for earning yield within the Bitcoin ecosystem. It enables users to grow their Bitcoin through sBTC rewards, DeFi protocols, and Stacking opportunities on Stacks, Bitcoin’s leading L2. With historical yields ranging from 5–10%, users can access pooled and liquid stacking or earn directly with sBTC and STX. Integrated protocol support includes platforms like ALEX, Bitflow, Granite, Hermetica, Velar, and Zest Protocol for trading, borrowing, lending, and synthetic assets. Leather is available as a browser extension and mobile app, offering a seamless way to engage with Bitcoin DeFi. By combining yield generation with open-source transparency, Leather empowers Bitcoin holders to put their assets to work without giving up custody.