The zip-up hoodie
Released in April 2018
Released in August 2019
- New seams to prevent loose threads or fabric sticking out
- Tone-on-tone drawstrings
- Crimped metal tips (to stop them from coming off)
- Added a knot at the end of the drawstrings (so they don't disappear inside the machine)
Released in October 2022
- Switched to organic cotton (GOTS certified)
- New hood (less pointy and less heavy)
- Removed the metal tips (to stop them from hitting your teeth when you run :)
- Switched to embroidered eyelets (to keep the drawcords from slipping)
- Removed the stretch side panels (which created weak spots because the elastane threads could come loose)
Released in May 2023
- Two-panel hood for extra comfort
- Hood lining removed, so it's lighter and dries faster
- Added lightweight metal aglets to prevent the cord from fraying
We use organic cotton because so-called "conventional" cotton is a disaster for insects, birds and farmers. More info in this article.
Full composition: main fabric 100% organic cotton, sleeve and collar ribbing 98% organic cotton 2% elastane.
A typical sweatshirt fabric, but denser than average.
This sweatshirt is made in Portugal, in the Triwool factory we've worked with since 2017.
Worn, tested and approved by thousands of customers, this hoodie is the result of several years of continuous improvement. We've refined it over time to reach a quality-ethics-price balance that we now consider optimal. For example, to make the colours hold up even better in the wash, we could add polyester to the mix, but it would be less pleasant to wear and would hold on to odours more.
The techniques behind the quality
Compact yarn
The fibres are neatly aligned, giving a soft feel and better resistance to pilling.
Compact yarn
Dense fabric
Elastane reinforcement
Triple-pigment navy dye
Pre-washed
Dense fabric
One of the main problems with hoodies (and other sweatshirts) is that they lose their shape over time. One solution would have been to add polyester, but we chose to avoid that because there was another way: picking a 100% cotton fabric dense enough to limit stretching (420 g/m2 vs 350 on average).
Compact yarn
Dense fabric
Elastane reinforcement
Triple-pigment navy dye
Pre-washed
Elastane reinforcement
To figure out how to knit our ribbing without it losing its shape, we spent nearly €1,000 on lab testing. And bingo, we found the answer: the elastane had to be knitted "in jersey" – diagram at this link if you're into the technical side. It might seem like nothing, but it cuts the stretching by three (to be precise, the residual elongation after 1 minute is 11.2% vs. 32.3% for a standard inlaid elastane thread). In short, the ribbing at the waist and cuffs will keep its shape over time.
Compact yarn
Dense fabric
Elastane reinforcement
Triple-pigment navy dye
Pre-washed
Triple-pigment navy dye
Navy blue hoodies on the market tend to turn pink in the sun, due to the combined effect of UV rays and sweat. For our model, we use a special navy blue dye that blends the three primary pigments red – yellow – blue, pricier but especially hard-wearing. Our t-shirt, which uses the same dye recipe, scored a very good 4/5 on the test for simultaneous exposure to sweat and UV rays, see these results.
Compact yarn
Dense fabric
Elastane reinforcement
Triple-pigment navy dye
Pre-washed
Pre-washed
This hoodie is pre-set and pre-washed at the factory so it won't shrink on you at home (with cotton garments, most of the shrinkage happens during the first wash).
Compact yarn
Dense fabric
Elastane reinforcement
Triple-pigment navy dye
Pre-washed
A zip-up hoodie
To make a sturdy hoodie, we developed a dense fabric (420g/m2) in 100% organic cotton – we just added an elastane yarn to the waistband and cuffs to keep them from stretching out. We went with a slightly fitted cut (but not skin-tight) that flatters most builds. As for comfort, the inside is brushed: it's soft, it's warm, it's snuggly. And on the inside, there's a secret pocket (well, not anymore) (okay, there's still a pocket, but it's not secret now that we've told you) (though to the people who see you on the street, it stays secret) (is it the weekend yet?).
In detail
Brushed interior
The inside is fleecy for softness and to keep you warm.
Embroidered eyelets
It looks great and, unlike metal eyelets, there's no risk of them coming off.
Sturdy drawstring
The drawcord is fixed at the top of the hood so it doesn't do a runner in the washing machine. We chose a round cord rather than a flat one to keep it from fraying.
Inner pocket
To slip your keys or wallet inside (well, do with it whatever you like).
YKK zip
YKK stands for Yoshida Kogyo Kabushikikaisha, a Japanese manufacturer of quality zips since 1934.
How to wear it
A few ideas if you're stuck
Composition
Main fabric: 100% cotton
Ribbing (sleeves): 98% cotton 2% elastane
Origin and certifications
- Garment-making, knitting and dyeing: Portugal
- Spinning: Turkey
- Cotton: Turkey and India
How this product will age
How do we know? We ask our customers what they think of the product one year after they've bought it. And if the product is less than a year old, we give you our predictions based on some spontaneous feedback and on our experience with similar products.
This hoodie will stay in great shape over the years, without pilling or going baggy. Some people who have worn it a lot have noted that the cuffs can wear out at the ends.
The colours may fade with washing (less so if washed inside out). A handful of people have found that the colour can shift towards pinkish tones after too much time in the sun.
Care instructions
It's machine-washable at 40 degrees, but it's better to wash it at 30°C: just as effective, far greener and it'll extend its lifespan. Zip it up fully before putting it in the machine: this keeps the teeth from getting damaged and protects your other clothes from abrasion. And wash it inside out to slow down fading.
Avoid the tumble dryer, but if you have no choice, do it on low heat (i.e. on a delicate or synthetics setting) to keep the elastane in the sleeves and waistband from stretching out. Don't dry it on a hanger either: your hoodie is heavy when wet and could lose its shape under the weight of the water. The best thing for its lifespan (and for the planet) is to dry it flat, on a drying rack or a towel.
Environmental cost
This environmental cost is calculated using the official methodology of the French environmental labelling scheme (in force since 1 October 2025).
The label above shows the product's environmental cost according to the official methodology of France's environmental labelling scheme. It's what its manufacture "costs" nature when you look at its impact on climate change, ocean acidification, its toxicity for freshwater, and so on. Currently rolled out in the textile sector, this label should soon appear on many everyday consumer products (food, cosmetics, furniture, etc.) to help you shop in a more responsible way.
The zip-up hoodie therefore has an environmental cost of 1386 impact points*.
By comparison, a garment of equivalent weight, 100% polyester, made in Bangladesh and sold by a fast fashion brand, has an environmental cost of 3777 points*.
Why this difference? Here are the main reasons:
- The countries of production: manufacturing in Portugal or France requires less fossil fuel than in Bangladesh (one of the main producers of low-cost clothing). The result: this more local production limits the impact on climate change, ocean acidification and resource depletion.
- The material: organic cotton has a fairly low environmental impact compared to polyester, notably because it uses few pesticides (so low toxicity for freshwater) and because it's biodegradable (so fewer issues with microfibres or end-of-life waste).
- Durability: fast fashion brands drive purchases in particular by refreshing their collections very quickly and offering a huge number of styles, and they discourage repairs by charging laughably low prices. This increases the number of garments sold per person and reduces the number of times a garment is worn. At Loom, by contrast, we've chosen business practices that encourage our customers to keep their clothes as long as possible.
Even though we've done everything we can to keep it as low as possible, the environmental impact of this product isn't negligible. So before you buy, make your clothes last as long as you can.
*Calculations performed by Loom on 14/09/2026. Click 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 method evolves regularly) as on the official environmental display (based on version 7.0 of Ecobalyse)
Reviews for this product
The standard practice is to send review request e-mails a few days after the purchase. We wait a month, the minimum time needed to form a well-informed opinion
Customer review policy
When do you ask customers for reviews?
We send you a review request one month after you receive your order. We reckon that's the minimum amount of time needed to have worn and washed a garment several times and to really form a well-informed opinion. After that, all your reviews are published within the week, whether they're good or not.
Do you ask for reviews on 100% of the products customers order?
We used to do that at first, then we realised we were starting to send far too many emails to some people who buy from us regularly. In short, we were spamming a bit. On top of that, it was starting to take up way too much of the team's time to reply to reviews - since we want to reply individually and privately to almost every person who leaves us a review. Today, we no longer ask for reviews on products that meet the following two criteria: 1/ There are enough reviews shown on the site for people who want to buy to form a well-informed opinion about the product 2/ We've read enough reviews within the Loom team to understand how to improve the product for the next generation.
Hold your horses: what proves we don't tamper with reviews by slapping 5 stars everywhere?
Honestly: nothing, we're just giving you our word. Same as for everything else, by the way: where we manufacture, where our wool comes from, our lab test scores, and so on. The only times we might touch what you write are if your message contains spelling mistakes (and even then, quite a few slip past us) or if it's racist, homophobic, and so on (but that's never happened so far).
Asking for a review after a month isn't enough to know whether the clothes really are durable, is it?
You're right, which is why we send you another review request email a year after your purchase – we even ask for a photo to see how your garment has aged. The answers help us improve our clothes and provide information about "how this product will age" on our product pages. To avoid bothering our customers needlessly, we don't ask for these reviews on 100% of the products ordered: as soon as we have enough data to understand the areas for improvement, we stop asking for the one-year reviews.