100% wool

Thanks to wool’s elasticity, this sweater will lose very little of its shape. If the sleeves stretch out a bit, you can tighten them up with a quick pass of the iron, as explained here. This sweater is also resistant to elbow wear thanks to the thickness of the fabric—so far, only a handful of people have reported a hole.
It may occasionally pill slightly in areas subject to friction, such as the sides... but nothing that a lint shaver can’t handle (and the more pills you remove, the less likely they are to reappear).
The biggest risk with this wool sweater is moths if they take up residence in your closet! So here’s a short article to read to keep them from showing up in your home.

No need to wash this sweater: airing it out for 24 hours will get rid of all odors. But if you really want to, you can machine-wash it (on the wool cycle).

Do not use a dryer, as this may cause the sweater to shrink. Don’t dry it on a hanger either: your damp sweater is heavy and could lose its shape under the weight of the water. The best way to ensure its longevity (and to help the planet) is to dry it flat on a drying rack or a towel.

On the other hand, you’re absolutely free to iron it—in fact, you should! It can even help it regain its shape.

By the way, if the cuffs or hem of your sweater have stretched out, we’ll show youherehow to tighten them up using your iron.

The label above shows the product’s environmental cost according to the official French environmental labeling methodology. This represents what its production “costs” nature when considering its impact on climate change, ocean acidification, its toxicity to freshwater, and so on. Currently in use in the textile sector, this label should soon appear on many everyday consumer products (food, cosmetics, furniture, etc.) to help you make more eco-friendly purchasing decisions.

The thick sweater (older generation) therefore has an environmental cost of 2,765 impact points*.

By comparison, a garment of equivalent weight—made of 100% acrylic, manufactured in Bangladesh, and sold by a fast-fashion brand—has an environmental cost of 3,233 points*.

Why is there this difference? Here are the main reasons:

• Countries of origin: Manufacturing in Portugal or France requires less fossil fuel energy than in Bangladesh (one of the leading producers of low-cost clothing). As a result, this more local manufacturing reduces the impacts on climate change, ocean acidification, and resource depletion.
• The material: Wool has a fairly significant environmental impact, particularly because sheep release methane—a powerful greenhouse gas—during digestion. For this reason, the difference between the environmental impact of our product and that of fast fashion is not very significant. However, unlike acrylic, wool has major advantages: it is warm (thanks to its insulating properties), retains its shape (the fiber is very elastic), breathable (it wicks away sweat), and odor-resistant (it prevents the growth of bacteria).
• Sustainability: Fast-fashion retailers encourage purchasing—in particular by rapidly refreshing their collections and offering a vast number of styles—and they discourage repairs by charging rock-bottom prices. This, in turn, increases the number of garments sold per person and reduces the number of times a garment is worn. In contrast, at Loom, we’ve chosen to adopt business practices that encourage our customers to keep their clothes for as long as possible.

Even though we've done everything we can to minimize it, this product's environmental impact is not insignificant. So before you buy, make sure to get the most use out of your clothes.

*Calculations performed by Loom on August 24, 2026. Click on the links to access the simulations from the official Ecobalyse tool and get more details on the assumptions used. Please note: The number of points is not always exactly the same on Ecobalyse (whose methodology changes regularly) as on the official environmental label (based on Ecobalyse version 7.0).