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Muddy Faces

Waterproof ratings guide

We believe outdoor clothing is the most important piece of kit you can have to enable sustained play and learning outdoors. Through your feedback, over the last decade, we have developed a range of waterproof clothing meeting the diverse needs of many different types of settings.

Outdoor Hub

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How waterproof is your clothing?

To help you compare our waterproof clothing easily, we have added little blue raindrops, from 1 to 4, to indicate how waterproof an item is.

How is waterproof rating calculated?

For fabric to be considered waterproof, it must resist the pressure of a column of water 2000mm tall. The level of resistance is called the hydrostatic head.*

The higher the hydrostatic head, the more waterproof the material, ie 4 raindrops is extremely waterproof!

* For modern technical fabrics, waterproof capability is measured by its hydrostatic head. This is where the fabric is held taut under a tube/column of water one inch in diameter. The taller the column of water, the greater the pressure and therefore the more waterproof the material. For example, a fabric that is waterproof to 10,000 mm fabric means that the column of water will be at a height of 10,000 mm (32.8 feet) before water would begin to leak through the fabric. For fabric to be considered waterproof, it must resist the pressure of a column of water 2000mm tall.

Look after your waterproofs and they will look after you!

It is essential to look after your outdoor clothing for it to retain its waterproof level.

Every wash reduces the lifespan of the clothing. We recommend, for most outdoor clothing, all you need to do is simply slosh the clothes into a bucket of water, rubbing any stubborn areas with a cloth, and then rinse in a clean bucket of water.

For individual brands we have care and sizing guides. Just follow the links in the description for each product online.

See also

Waterproofs care guide

Waterproof clothing, if maintained in the correct way, should last for a long time, giving good value for money. However, you can very quickly reduce the effectiveness of waterproof material, so it is important to understand the clothing and how to care for it correctly.

Read More about Waterproofs care guide

Outdoor clothing buying guide

Muddy Faces developed this guide to give practitioners honest practical information to help make sure their budgets for outdoor clothing are spent in the most effective way.

Read More about Outdoor clothing buying guide

Environmental guide

The OEKO-TEX® Standard 100 is an independent test and certification system for textiles. If your clothing has this label you know it has the highest environmental & safety standards.

Read More about Environmental guide

Outdoor clothing in the Muddy Faces shop

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Clothing & Footwear

There is no such thing as poor weather. Our enjoyment of the outdoors relies on good quality clothing and an effective clothing policy. Take a look through this section to find outdoor play and Forest School clothing for early years, children, youth and adults.

For more information about outdoor clothing explore the Outdoor Clothing section of the OUTDOOR HUB. You'll find information about layering, waterproof ratings, care and buying guides and much more.

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