MAIUM Etymology

In Dutch, there are hundreds of words and phrases to talk about rain, MAIUM being one of them. It is a word from "Bargoens," in which it can mean "rain," "water," or even "moat" - of which we have quite a few in Amsterdam.


We are two friends from Amsterdam who grew up cycling through the rain and saw that traditional rainwear lacked both style and functionality. Inspired by years of wet bike rides, our goal is to design stylish raincoats that can adapt to unpredictable weather and a busy life. Designer Anita: "Regardless of whether we were having a business meeting, visiting a friend, or going to a festival, there was always the risk of catching a wet suit every time we traveled from A to B. That's why we created MAIUM. That's why we came up with MAIUM, traveling in style, and knowing that you and your clothes are protected."

MAIUM Word usage

"If I get MAIUM on my porem I go pleite" means "If I get rain on my head, I go pleite".


MAIUM is a product of its environment. With at least 130 rainy days a year and more than a third of the country below sea level, we have gained a reputation for coming up with innovative ways to keep ourselves dry.



Hang a wet raincoat out to dry, preferably on a hanger. Even a dry MAIUM raincoat will always need to hang on a hanger to maintain its shape. Tell friends about your experiences with MAIUM. Expect and accept compliments.


Leaving a wet raincoat folded or crumpled in a dark place, such as in a bag. Ironing your raincoat. Putting your raincoat in the dryer. Forgetting your raincoat after Friday afternoon drinks or leaving it at a festival.

Washing instructions

Please refer to the heading 'specifications and size chart' on the product specifications page for each product. Here you will find the specific washing instructions for your product.


All our front zippers are water-repellent and can open on two sides. Should the zipper still get stuck, we recommend greasing it with a drop of silicone gel or spray.

Bicycle Poncho

Open the distinctive zippers on both sides of your jacket. Toss the front panel over the handlebars. Grab the handlebars through the special "bike holes. Or just let your jacket hang over your knees.


Difference between Puffer and Lightweight Puffer

The Lightweight Puffer is made of Pongee fabric, which increases breathability, while the Puffer is made with a Polyurethane coating. The Lightweight Puffer is 15 cm longer than the Puffer. Both feature a filling made of recycled plastic, not down.


Our raincoats are 90% made from post-consumer recycled plastic. The fabrics we produce with are certified, which proves that they are actually made from recycled yarn and woven in a sustainable, ecological way, without the use of harmful substances. These certificates are issued by independent partner institutes.

Production Ethics

The fashion industry is one of the most environmentally damaging industries in the world: therefore, it is of utmost importance that forward-thinking designers combine fashion and design to create sustainable, functional and timeless alternatives. By definition, a raincoat is designed to protect us from the elements. The effort we make to reconnect with nature by applying sustainable ways of designing is our way of giving something back and conversely protecting the elements from ón us and our behavior. We want to prove that fashion and innovation need not spoil the earth.


Our coats are PFAS-free. PFAS is the abbreviation and umbrella name for Poly and perfluoroalkyl substances. These are man-made chemicals that do not occur naturally in the environment and are also difficult or impossible to break down. PFAS have useful properties: they are water, grease and dirt repellent, among other things, which is why they are often used in making rainwear. In normal use, products with PFAS in them will not pose immediate health risks. There are specific "PFAS," for example, PFOA and PFOS and PFCs that can have harmful effects on humans. We do not use all of these chemicals in our products.


90% of our materials used are from recycled plastic. The majority of our jackets are made from the sustainable materials recycled PET and recycled nylon. We can refer you to the specifications for each product to find out what material the jacket you want is made of.


Our Original and Poncho raincoats with taped seams are fully waterproof with a water column of 3,000mm. As a result, no water gets through the seams during a heavy rain.


We can refer you to the product specifications for each product for the correct indication of breathability. PU coated jackets are not breathable due to the properties of the coating. For this reason, our PU coated jackets have ventilation holes at the armpits.


No animal substances are used in the production of MAIUM raincoats, and all raw materials are animal-free.

Factory audits

All the factories we work with are BSCI audited with at least an A (highest possible score) in 50% of the audited performance areas, giving confidence in fair, safe and healthy working conditions for our factory employees. Working closely with our production facilities, we continuously work to further improve health and safety conditions. To further strengthen the relationship, our team visits factories at least once a year to learn more about how and in what areas there is room for improvement and how we can take cooperation to the next level. In times of travel disruption, we hold these meetings via video call on a monthly basis.

Production locations

MAIUM raincoats are produced in Beijing, China, the epicenter of outerwear. All manufacturing facilities are located in Hebei Province, where the factories are known for their excellence in producing technical garments. They are regarded worldwide as the best in technological developments in waterproofing.


Opening hours customer service

Our customer service team can be reached Monday through Friday at [email protected] or via telephone number +31 (0) 20 244 10 81


We regularly replenish our existing items. If an item is sold out, you can register for an email notification when it is back in stock. If one item becomes available, we encourage you to be alert.

Contact details

For questions about an order, return or other product-related inquiries, send an email to [email protected]. For general questions send an email to [email protected] .. Please call at +31 (0)20 244 10 81.

Response time

We will get back to all your questions as soon as possible with a real, personalized answer.


If you no longer wish to receive the newsletter, you can unsubscribe yourself using the 'Unsubscribe' link at the bottom of any email you receive from us.


Multiple Items Returns

Returning multiple items is possible, please create one label using this link. When creating the return label, please add the order numbers of the returned items as a note.

Returns United Kingdom

This link allows you to register a return from the UK. Please fill out the form and attach it to your return.

Exchange a product?

A return label can be created through this link.
Please indicate in the comments field which product you wish to receive.
Once we receive the returned product we will send the new jacket.

- Please note that the jacket cannot be exchanged for a model with a different price.

Return Policy

Not happy with the size or color? Then return your MAIUM within 30 days. We use Returnless to handle our returns. Via this link you can fill out the return form and request a return label. The MAIUM must be returned unused and undamaged, with the tags attached to the item. Online orders cannot be returned to stores and can only be returned to us via parcel post. Shipping costs for all returns are at your own expense. For complaints or damages please contact [email protected].

Where do I find my return label?

You can create your return label using the following link. Please enter your e-mail address and your order number, which starts with #.

How do I stick the return label on the shipping bag?

Use strong duct tape around the edges of the return label, this will prevent the bag label from falling off while transporting the return.

How do I pack my coat for the return process?

Fold the jacket and put it in the same packaging in which you received your MAIUM. Always include the return form with this.


Refunds are processed in the same manner as the payment of the order. You will receive your refund within 14 days after the returned item(s) arrives at our warehouse.


Shipping destinations

We only ship our products in Europe

Shipping costs

We ship free of charge within Europe. Countries that are not part of the European Union are subject to a surcharge.

Shipping time

Orders are shipped within 24 hours on weekdays. Weekend orders are shipped on the following Monday.


Payment methods

We accept the following payment methods: iDEAL, Credit Cards, Paypal, Klarna, Sofort Banking, Bancontact, KBC/CBC, Bank Transfer and Belfus Direct.


Warranty conditions

We offer a 1-year manufacturer's warranty on workmanship and manufacturing defects. Our raincoats are manufactured with great care and by hand, with attention to detail to ensure high quality. Should you encounter a warranty issue, please contact us at [email protected].



We test all of our styles for waterproofness each season. To measure
waterproofness, we use a hydrostatic pressure measurement. This
technique determines how much water pressure must be applied to a fabric
before it begins to leak. A piece of fabric is stretched at the bottom of a long tube with a
diameter of about 10cm. This tube is
filled with water until the water comes through the fabric. When some
water just begins to come through the fabric one measures the height in millimeters of
the water in the tube. This height is the water column and the fabric can withstand
that measured pressure. With a water column of 3,000mm the fabric leaks when
it is under the pressure of 3 meters of water. The higher the water column the greater the
protection from rain. A fabric is generally considered waterproof
if the water column is 1,000mm or more.
Below is an overview on waterproofing and its use
for this purpose:

Water column - Weather conditions
1000mm to 3000mm - Resistant to light rain and moderate snow
3000mm to 5000mm - Resistant to moderate rain and snow
5000mm to 10,000mm - Resistant to long drives or hikes in heavy rain and wet snow
>10,000mm - Resistant to heavy rain and downpours, wet snow and high pressure


Breathability is an important functionality of many of our jackets. Breathability, or breathability, is a technique that allows moisture to escape from inside to outside while ensuring that water from outside does not enter. Microscopic openings are made in the TPU lamination (LINK) of our fabrics. These are smaller than water droplets, preventing water from penetrating the fabric but allowing vapor to escape.
Breathability is tested using the Moisture Vapor Transmission Rate (MVTR). This test measures the rate at which moisture passes through fabric. The MVTR is measured in grams per square meter of fabric per 24 hours (g/m2/24h). How you can imagine this is that a fabric with a breathability of 3000g/m2/24h, can pass up to 3000 grams of moisture vapor per m2 of fabric in a 24-hour period. The higher the MVTR value, the better the fabric breathes.

Breathability - Exercise
>3000 g/m2/24h - Light exercise, such as normal cycling
>5000 g/m2/24h - Heavy exercise, such as hard cycling

It is important to keep in mind that breathability measurements are affected by factors such as fabric construction, thickness and any coatings or treatments applied to the fabric. In addition, individual perceptions of breathability may vary depending on your activity, environmental factors and personal preferences.