Be Kind to Your Body and the World With These 12 Eco-Friendly Activewear Brands

You'd never guess what Boody's products are made of. Ready? Organic bamboo. The brand uses the plant's viscose, which it says is "easy on the skin, superbly soft, and highly breathable." That bamboo is also certified by the Forest Stewardship Council, meaning that its farming and harvesting doesn't contribute to the destruction of natural habitats.

Try: Soft Mid-Calf Layering Tight ($25)