The Ostro Fleece offers warmth, water-repellency, breathability and comfort for a wide range of high energy activities in urban and mountain environments.

Soft, stretchy hoodie in water-repellent, wind-resistant Nikwax® Fleece. Designed to be combined with the Ostro Windproof for versatile three season weather protection.


RRP £125.00





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Average weight 379g

Product Ethics

  • PFC*-free water repellent finish
    (*per and polyfluorinated compounds)
  • Produced in Colombia by MIQUELINA, a member of the World Fair Trade Organization. Guaranteed Fair Trade.
  • Fully recyclable through Páramo.

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The Ostro Fleece is for active people who swap between activities and environments.

Unpredictable weather can cause a predicament for backpackers, trail runners, cyclists and walkers. It is a challenge to pack light and still be prepared for all possible conditions.

The Ostro Fleece offers a solution: worn on its own, it is highly breathable, provides warmth, and repels moisture thanks to a PFC-free water-repellent treatment. When conditions turn windier, wetter or cooler, the Ostro Windproof is quickly added on top for good weather protection.

The Ostro Fleece provides both functionality and comfort.

  • Simple, close-fitting "Ninja" hood that fits well under a helmet.
  • Five pockets, all lined with mesh Pump Liner® to help move moisture.
  • Off-centre zip prevents discomfort around the mouth and avoids bulk when layered.

The Ostro Fleece is specifically designed to be compatible with the Ostro Windproof.

Together these two garments create a versatile waterproof system.

Nikwax® Fleece is water-repellent, wind resistant and directional -

Nikwax Fleece Fabricactively pushing liquid water away from you to keep you dry even in conditions of high humidity.

The fleecy fabric traps still air to warm you. If combined with a Nikwax Windproof outer to deflect raindrops and cut wind chill, Nikwax Fleece will provide full weatherproof protection and remove perspiration very effectively, working well in all temperatures and humidity conditions.
Nikwax® Fleece+ is a high loft, highly insulating fabric that provides excellent directionality and extra warmth.

Choose an Ostro Fleece for protection, functionality and versatility across variable weather conditions...

This irresistibly soft fleece hoodie offers water-repellency, insulation and excellent breathability. It combines with the Ostro Windproof for enhanced weather protection. The curved back hem protects the lower back.

A close-fitting "Ninja" hood moves with you and fits under a helmet. The off-centre zip avoids discomfort around the mouth.

Five pockets provide plentiful storage and are lined with Pump Liner® to move moisture away from you.

Choose the Ostro Fleece to provide optimal versatility in unpredictable conditions.

How will my Páramo Fleece outperform other mid-layers?

Many other mid-layers are designed simply to provide extra insulation when worn over a baselayer. Your Páramo fleece offers more versatility. Firstly because it is water-repellent it provides a good level of protection when worn as an outer layer. Secondly, because it is directional, moving moisture away from you constantly to leave you more comfortable. Thirdly, because in the worst conditions it is designed to work with a windproof outer to provide a higher level of weather protection, equivalent to the protection of one of our waterproof jackets. Therefore, it can adapt easily to a very wide range of conditions.

  1. Simple, close-fitting "Ninja" hood that fits well under a helmet.
  2. Off-centre zip avoids bulk when layering and aids comfort around the mouth area
  3. Five pockets, all lined with mesh Pump Liner® to help move moisture:
    • 1 zipped, secure internal chest pocket sized for compass or valuables.
    • 2 handwarmer pockets with concealed zip.
    • 2 open internal drop pockets.
  4. Curved back hem protects lower back.
  5. Athletic fit.
  6. Treated with PFC-free Nikwax® TX.Direct for renewable water-repellency.
  7. Simple cuffs can be pushed up for cooling.
  8. Designed to be combined with the Ostro Windproof Jacket to give waterproof performance.

What users say...

“The Ostro Fleece has become my absolute favorite fleece. Other fleeces were often too thick for me and I got into a sweat relatively quickly. The Ostro Fleece is a great windbreaker and withstands light drizzle. In combination, I always have the Ostro Windproof Jacket with me. It does not take up much space and, with the fleece, I have a complete waterproof system. An inside pocket would be great, but otherwise a near-perfect fleece!“ 

Fabian Baumann, August 2019

“If smartphones have supplanted ordinary phones, then the Ostro is a ‘smartfleece’. To touch (or rather stroke), the Ostro is soft and this furry fabric does more than just feel nice. It was developed by Nikwax to be water repellent and wind resistant. With its athletic fit and longer arms, this is a light and versatile fleece for optimum mobility and comfort in the extremes, designed to work in combo with the Ostro Windproof. And as with all Páramo kit, it boasts superb eco and ethical credentials.”

Country Walking, June 2018

“At 379g, this is a light fleece. It's not too warm nor too cold: it just works. The unique bit: it feels....well, like there's something on it . That's because there is: a PFC-free water repellency, making it half useful in rain. VERDICT: A useful addition to my take-on-every trip kit list.”

Trail Magazine, October 2017

“There are trips when full blown weather protection isn’t necessary or expeditions to environments where rain is minimal but equally the chances of being caught in debilitating foul weather remain. Over the last three summers I’ve travelled to the remote Arctic archipelago of Svalbard, backpacking solo over some of the roughest terrain and bearing an expedition weight of 30kgs which includes a rifle, ammunition and a camp warning fence to protect against the islands’ polar bears. With specialist equipment a must, every other gram worn or borne must be accounted for. Precipitation is low but equally the possibility of being caught in numbing rain remains.

Having used a Páramo Fleece Windproof system before, I was keen to try the Ostro Fleece and Windshirt during my last trip. The Ostro is a light system with a contemporary feel. Over the course of 10 days hard backpacking the Fleece kept me warm and dry in both brisk winds and light showers. One afternoon as I headed out along a remote coastline a heavy Arctic squall landed. The Ostro Windshirt thrown on top kept the worst of the rain at bay until I was able to throw up my shelter.

What the Ostro brings to my clothing options is a light and flexible clothing system. The Fleece is warm, rain resistant and wind tight but takes little room stowed in the pack. It’s a contemporary design which looked as good in the Airport Lounge as it functioned out on the Arctic tundra. Throwing the Windshirt on pushed its capability considerably and it offers a good three season use for days when full rain protection is not a must. Both garments wore well over 10 days of carrying a very heavy pack and I’m convinced of their long term durability.”

Mark Waring

I have had the Ostro Fleece and Windproof for about a year. I love the combo as it is fantastically warm for its weight and particularly weather resistant.

I have both fleece and windproof in Medium. I am 5ft10  (178cm) in height, and relatively slim. The length of the fleece is perfect. The style is pretty slim, which I really like. The sleeves are too long. I have the fleece in a light blue, which is very finely speckled with black. The colour hides any dirt pretty well, essential when out and about in it for several days. The fabric is really soft which makes it really comfortable. I have also found it to be extremely breathable. There are five pockets and the size of all of them is good. Two outside hand warmer pockets have zips. The backs of these pockets are sewn up to make internal drop pockets. There is also a good sized zipped internal chest pocket. The fleece packs up very small but what is surprising is the warmth that it gives. In spring/summer/autumn I will happily wear a base t shirt and the fleece, adding the windproof when it is damp. In deepest winter I wear a long sleeved base, then the Ostro, all underneath the Helki jacket. I really like Páramo hoods. When you pull the soft fabric around your head it blocks the sound of the wind and also the cold. On a bad weather day this will really improve your mood. I bought the Ostro very much for the versatility of its hood and it is really snug on my head.

Richard Shortridge

In what kind of weather conditions can I use my Ostro Fleece?

Worn alone, the Ostro Fleece will protect against mist or drizzle and provide insulation.

Combined with the Ostro Windproof, it will give good waterproof protection and additional warmth for cooler, wetter conditions.

Equally, it forms an effective midlayer for extra insulation under an Analogy waterproof in cold conditions, making it a versatile and useful year-round fleece.

Which garments should I use with my Nikwax® Fleece to get optimum performance?

We recommend combining this Fleece garment with the relevant Nikwax Windproof for maximum effectiveness when conditions require.

Worn under the appropriate Windproof garment, the combination can keep you dry and warm even in heavy rain, allowing you quickly to increase your protection if conditions deteriorate or for different times of year. The two garments are designed to function well together, with hoods that work in tandem and ventilation that lines up with internal pockets.

We recommend using our Parameta T+, Parameta T or Parameta G baselayers underneath your Fleece clothing.

Parameta T+ fabric is a lightweight wicking baselayer for warmer conditions where you don’t need significant extra insulation. The fabric will manage any sweat you produce when working hard, rapidly moving it across the fabric for easy evaporation.

Parameta T fabric provides a good balance between light insulation and heat dissipation for mid-range temperatures.

Our Parameta G fabric is a versatile baselayer fabric, perfect for days out in colder conditions. The raised grid pattern allows wind to pass through it, giving it excellent cooling when vented through your outer layer - perfect for going up hill. When you get to the top of the hill, close the vents on your outer layer and the raised grid will trap layer of warm air for insulation.

For trips when you’re likely to experience extreme cold, our Nikwax Insulator garments are designed to be worn on top of your outer garments. This is great when stopping whether to eat lunch, take some photographs or set up camp

Páramo clothing does not rely on hazardous PFC treatments for water repellency.

Working closely with Nikwax, we have developed a pioneering PFC-free treatment for our fleeces, waterproofs and windproofs. Recent studies show that PFC’s are persistent in the environment and are damaging to human health; which is why Nikwax waterproofing solutions are water-based, use no harmful solvents or propellant gases, contain no damaging PFC’s and are not tested on animals.
For more information on Páramo and PFC’s click here.

This garment is made by the charitable Miquelina Foundation.

Páramo’s ethical manufacturing partnership with the Miquelina Foundation in Bogotá, Colombia, has offered vulnerable women training and employment since 1992. This alliance has benefitted thousands of at-risk women in practical ways, helping them to build houses, and providing a kindergarten and canteen for their children. With Páramo’s support, Miquelina holds ISO 9001 accreditation, which assures dedication to quality. In 2017, Miquelina attained guaranteed Fair Trade status from the World Fair Trade Organisation. Click here for more information.

All Páramo garments are covered by our Recycling Scheme, which prevents them from ending up in landfill.

For every item of Páramo clothing you recycle with us, you will receive a voucher of (up to) £50, to use against a future purchase. Click here to find out more about recycling your Páramo...

What if I damage my Páramo clothing?

Simple repairs can often be done with a needle and thread without compromising the performance of your garment. If it is seriously damaged, you can send it back to Páramo and request a quote for having it repaired. Our Customer Service team can advise you.

What if I damage my Páramo clothing?

Simple repairs can often be done with a needle and thread without compromising the performance of your garment. If it is seriously damaged, you can send it back to Páramo and request a quote for having it repaired. Our Customer Service team can advise you.

We guarantee everything we make.

Páramo waterproof garments, maintained correctly with Nikwax, will outperform membrane and coating-based waterproof systems. The durable fabrics and high quality components used in our garments contribute to their longevity.

Under the terms of our Lifetime Guarantee, any manufacturing defect will be rectified, free of charge, for the life of the garment. Any damage by accident or normal ‘wear and tear’ can be repaired by our workshop at a reasonable cost.

To register a guarantee with us please click here.

Size To fit chest up to
  cm in
S 97 38
M 101 40
L 109 43
XL 117 46
XXL 125 49

Páramo Men's ATHLETIC FIT Size Guide Garments are specified using metric measurements, therefore the metric measurements in this chart are the most accurate. Imperial equivalents are rounded to the nearest half number.


Measurements relate to the body rather than garment measurements.

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to look after your Páramo item.

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