I love nesting pouches and zippered wallets, especially for riding. It’s nice to have one place to throw in your Co2, patch kit, multitool, debit card, cash, “safety” stuffs and even your phone. While there are hundreds of options out there, I’m currently using the Strawfoot Ride Wallet and Zip Wallet.
The Ride Wallet fits my Sony RX100mk3, or an iPhone 6, or even a Yashica T4 while the Zip Wallet fits cash, cards and my riding keys. Both are made by hand in Santa Cruz from weather-resistant cordura, a waterproof zipper, ripcord handles and have a secondary pocket on in inside. In stock now at Strawfoot.