The humble t-shirt is probably the hardest-working piece in your wardrobe, and that makes it one of the most important places to make a sustainable choice. The problem is that every brand claims to be "eco-friendly" and very few give you the data to back it up. We scored these five women's t-shirts using the Fashion Sustainability Index, our methodology that evaluates materials across carbon footprint, water use, pollution, chemical impact and biodegradability, then factors i

The humble t-shirt is probably the most-worn item in your wardrobe, which makes it one of the most impactful places to start buying more sustainably. The problem is that most "best sustainable t-shirt" lists give you vague ratings with no real way to compare one pick against another. You're left trusting someone's gut feeling about whether a brand is "good" or "great." We took a different approach. Every t-shirt in this guide has been scored using the Fashion Sustainability I

A well-made winter sweater earns its place in your wardrobe. It's the layer you reach for on cold mornings, the piece that travels with you through seasons, the garment that somehow feels like home. But the materials that make knitwear so comforting come with environmental costs that vary enormously—from devastating overgrazing to near-zero impact recycling processes. The good news is that choosing sustainably doesn't mean sacrificing warmth, softness, or durability. Some of