Our clothing range is made to take you from valley to summit and back again. Born of the two-day Original Mountain Marathon, our clothing is perfect for those wishing to move quickly through the mountains in any conditions whilst staying true to our lightweight ethos.

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How do I care for my OMM Clothing?

Just like owning a top end sports car, a piece of performance clothing is only as good as how well you care for it. In the same way a sports car still needs oil changes and screen wash, you need to regularly maintain your OMM Clothing to keep it performing at its best. It is important to follow the Product Care Instructions and use the correct wash and/or proofer product as these can affect your clothing’s performance. More Info

What's the sizing like?

On the whole, OMM Clothing tends towards the “fitted” end of things. Designed for performance use, the fabrics often work best close to the skin whilst also reducing drag and bulk when moving quickly. We use three different fits in our clothing ranges; Contact Fit, Fitted & Regular Fit. This gives you an idea of how the product is meant to look and fit. You’ll find a link to the Fit Guide on each product page. You also find a link to our Size Guide, a more in depth table that shows measurement ranges for each size. Some of our Clothing is a Unisex Fit, in which case it is often best to go down a size for Women.

What materials do we use?

We use a mix of performance fabrics in our clothing that are designed to wick sweat and dry quickly whilst also being lightweight and low bulk in order to meet the demands of the mountain runner. For this reason, we do not use any cotton, wool (including merino) or leather. Most of our clothing uses variants of Nylon and Polyester. We then also include stretch elements such as elastane and chemical treatments (DWR) for water repellancy where needed. We work closely with manufacturers such as PrimaLoft and YKK to ensure we use the highest quality materials to achieve the best performance for the weight. For more information on the terms we use, check out the OMM Glossary.

Can I return it if it doesn't fit?

Yes! Our returns period is 14 days from receipt of the item. As long as the labels are attached, the clothing is unworn (except to try on) and the original packaging still intact (i.e. the clear poly bag it may have been wrapped in). Unwanted or unsuitable items are returned at your cost but exchanges are free to send back out. The returns address and details can be found on the packing slip included with your order. In case of a suspected warranty issue, follow the instructions on the packing slip or contact our support team:

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