As a longtime tennis lover, I was glued to my computer screen with fascination as the historic Wimbledon first-round match between American John Isner and Frenchman Nicholas Mahut notched up more games than any before in the sport. I can only imagine how exhausted he may still be and how much his body must ache. But his shoes must be in even worse shape; John needs a new pair of shoes. Lucky for John and all you other sports players (and shoe wearers), Carbonfund.org partner Planet Shoes has a huge selection of the best shoes around. Right now, with the coupon code fire20, you can save 20% off all sale items on their site. It’s the start of the summer sports season and a great time to get a new pair of shoes from an eco-conscious company. As an early participant in our Million Tree Challenge, Planet Shoes collected donations from its customers and matched them to plant 2,615 trees. Further, Planet Shoes allows its customers to make a donation to offset the carbon footprint of shipping their shoes – an effort that has reduced almost 3 million pounds of CO2 to date.