For example, nylon made with Amni Soul Eco allows ... wool is considered a renewable fabric. Vegans can opt for organic cotton flannel or fleece, which has a feeling similar to acrylic.

Sure, that T-shirt might feel nice right now, but halfway through your HIIT session you'll be cursing cotton ... to what the fabric does when it becomes damp or wet. For example, if the fabric ...

3L Bio-Based Nylon, a three-layer performance fabric, forms the basis for a bevy ... and a shirt jacket enlists a stretch cotton nylon with a Panama weave. Crewneck sweatshirts are made with ...