My Banana's are still yellow!

Name: Green Bags
Cost: around $10
Where do I get it? www.greenbags.com
Why I love it:
I get so frustrated when the wonderfully ripe fruit I purchase goes bad so quick. I have been using these bags for a week now, and my bananas are still yellow! I think these work well to keep fruit a little longer and I am hoping to lessen the amount I toss to being over ripe. Man, I love things that work like they advertise!