Mighty Wallets are Mighty Awesome. They are light weight and water resistant, which makes them great for the gym, and they are recyclable (live the green). Made from from Tyvec (the same material shipping envelopes are made from) they are tear resistant, which makes them virtually indestructible, and also pretty darn cool. They are also stylish (yes, we said stylish) with a design for every personality. Carrying a Mighty Wallet is truly a revolution in your pocket!