Interested in investing in green technology? Or do you just grocery shop like a savvy eco-lover? Either way you'll want to check out this freebie. Mantra Venture Group, a company that "facilitates investment in sustainable, commercially viable technologies," is offering a free tote bag in green or red.

The company has a patent on converting carbon dioxide to fuel; whether or not you have the money to invest in that product, it's certainly an interesting venture and a snazzy bag that you can proudly store in your hybrid car or bike panniers.

Every day, WalletPop will be bringing you information about a fantastic freebie. Like what you see? Check back tomorrow for more!