Los Angeles-based designer TRTL BOT has unveiled two eco-friendly and multifunctional iPhone 4 cases consisting of recycled materials. These iPhone 4 cases are not only stylish and functional, but also promote social responsibility by decreasing environmental impact.

The Kickstand 4 case is a multimedia optimizer with a versatile design that props up iPhones in portrait, landscape and tripod positions. The second iPhone 4 case is the Minimalist 4, which combines your wallet and phone case in one.