SIMPLE Talk about a small footprint. Thirty-four of Simple' s 37 men's styles are made almost entirely of earth-friendly or reused materials: water-based glue, natural crepe-rubber midsoles, and outsoles made from old tires. This year, Simple began using mostly organic-cotton or bamboo liners, and its parent company, Deckers Outdoor, is currently building a sustainable factory in China. simpleshoes.com GREEN-O-METER: 3.5

NAU More so than any other company, newcomer Nau sees the big picture: Each of the 30 fabrics used in its spring line was developed from scratch, with an eye to everything from end-of-life recyclability to reducing the amount of energy the garments will require during washings. A Web-based sales approach saves FedEx truck exhaust and cash, allowing Nau to donate an incredible 5 percent of its revenue to green causes. nau.com GREEN-O-METER: 5

CLIF Green thinking permeates Clif. Every Mojo, Luna, and Clif bar is 70 percent organic, employees get forgivable loans for buying a hybrid, and their new headquarters is being designed to meet LEED-platinum standards. Clif even has a staff ecologist. In 2006, the company switched its delivery trucks to biodiesel, and starting this year it will buy back and recycle used wrappers. clifbar.com GREEN-O-METER: 3.5