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Buffalo Systems Mountain Shirt - Olive Green

Buffalo Systems

Buffalo Systems Mountain Shirt - Olive Green


Weight: 720 g         9 reviews
The Buffalo Mountain Shirt is a unique fleece-lined garment, designed as an all-in-one base-layer and outer jacket. It's perfect for various cold-weather activites, such as hill-walking, fishing, climbing, and trekking, as well as for general outdoor use.

Buffalo originated this one-layer system in the late 1970's, to replace the numerous layers often worn by climbers, fell runners and hill walkers in winter conditions. It comprises a lining of insulating pile fleece, with a functional and water-resistant shell outer, producing a garment that is completely windproof, lightweight and amazingly warm. It is also highly breathable and extremely efficient at transmitting moisture vapour.

As unconventional as it sounds, the Mountain Shirt is designed to work most efficiently when worn next to the skin. In this way, the pile fabric wicks moisture away from the skin more rapidly, where it is then dispersed by the Pertex to the external surface to evaporate and keep the body dry and free from chilling. Side zips have been fitted, not only allowing access, but to adjust for ventilation, enabling the user to regulate their body temperature on the move.

Buffalo Systems are dedicated to producing clothing for the professional and committed outdoor activist. All Buffalo products are rigorously tested through an entire season of Scottish winter and often longer. All components, from zips to thread, are of the highest quality and are equally tested.

Sizing: Buffalo have designed the Mountain Shirt to be a very close-fitting garment, to ensure maximum performance. Strictly speaking, the looser the fit, the less performance you will get. We recommend you measure your chest when completely expanded, and choose your size using this measurement. The Mountain Shirt is a mid-length top, which finishes at the top of the thigh.

  • Windproof and water-resistant Classic Pertex outer shell
  • Windproof to 50 mph
  • Aqua Therm pile lining
  • Highly breathable
  • Neck zip with storm baffles
  • Two-way side zips for access and ventilation, with storm baffles
  • Zipped map pocket with weather flap
  • Aqua Therm pile-lined hand-warmer pocket
  • Tape and buckle waist adjuster (inside hand warmer pocket)
  • Eight ventilation controls
  • Rucksack hip belt can be fastened through hand warmer pocket
  • Scooped back (10cm longer than front)
  • Touch and Close strip around collar for attachment of hood
  • Touch and Close cuff and hem adjusters
  • Colour: Olive Green
  • Weight: 670g (in size 40)
  • Machine washable
  • Made in Great Britain


  Delivery in 1-2 days within the United Kingdom
  UK Orders placed before 2PM GMT will be dispatched the same working day
  Overseas delivery times will vary depending on the destination

Please note that our offices are closed at weekends, so any orders placed after 2PM GMT on a Friday will not be dispatched until the following Monday.

Orders with a total value over £300.00 will be dispatched free via a next day delivery service within the UK at no extra cost.

Please note that in some instances, orders for heavy items may take an extra day to arrive.

  Overseas deliveries
For overseas deliveries, please refer to the following estimated delivery times:

  • Europe: 3 - 5 working days
  • Rest of the world: 5 - 7 working days


A full refund or exchange will be given provided that the items have not been worn or used, and are returned to us within 30 days of purchase, together with all relative labels and packaging. You are responsible for the cost of returning items.

Please ensure that you include a copy of your invoice, along with an explanation of why you have returned your goods. If you wish to return your goods for any reason, please do so to the following address:

Woodlore Limited
PO Box 3
East Sussex
TN19 7ZE
United Kingdom

Product Reviews

Buffalo Systems Mountain Shirt - Olive Green is rated 5/5 based on 9 customer reviews.

All of our product reviews are from customers with verified purchases.

Overall Rating:


  1 of 9

  I haven't had a chance to try it out in cold weather but I have tried lightweight backpacking on a cold, wet & windy August weekend with just the mountain shirt and a nylon running shirt for top half wear. When the rain got heavy the mountain shirt (without the running shirt) kept me comfortable and with maximum ventilation not too too sweaty. If I hadn't have been wearing a rucksack (about 5kg) airflow would have been better still. The inner fleece dried quickly, even when a little damp was still comfortable. Worn with the hood at night in my bivvi, it kept me toasty worn. Love it!  

21st August, 2017

Rated: 5/5

  2 of 9

  Perfect for February salmon fishing in Scotland (in the snow). I wore a base layer underneath and needed only a hat and gloves to be comfortable. Outstanding piece of kit.  

  Patrick Clarke
17th February, 2017

Rated: 5/5

  3 of 9

  Love this item, so light yet so warm.  

7th February, 2017

Rated: 5/5

  4 of 9

  Great quality and price, and arrived in good time.  

  Matthew Wheeler
12th August, 2015

Rated: 5/5

  5 of 9

  Another great product from Buffalo. Can be worn on its own in all but the harshest of rain and still keeps you warm. Side zips and webbing strap on the inside pocket also allow you to keep it vented if the weather becomes warmer or you start working a little harder. Also still made in Sheffield!!  

  Adam Chipchase
11th May, 2015

Rated: 5/5

  6 of 9

  I can't quite bring myself to wear this next to my skin as recommended, however even with a thin base layer this product is excellent. I wore it for the first time paragliding near Ingleton and spent the whole day either in the air or sitting on top of the ridge in wind. The other layers I brought didn't see the light of day and I was one of the only people up there who wasnt shivering as the day drew on. I've tried and use a lot of kit, this I'd highly recommend for the weight and space that it takes up.  

  James Gorrill
17th September, 2014

Rated: 4/5

  7 of 9

  Happy birthday to me. I've wanted one of these tops for years. Wife finally took the hint?? Thank you Woodlore for your great service again and supplying fantastic kit. Cheers, Wayne Smith.  

  Wayne Smith
13th July, 2014

Rated: 5/5

  8 of 9

  Had one for 3 years before a tumble dryer incident (girlfriend!). The BEST jacket I have ever had! Got a new one from yourselves ASAP. Will never be without one again. Warm, windproof and quick drying. A must have in the west of Scotland.  

  Richard Kinsman
10th April, 2014

Rated: 5/5

  9 of 9

  I can not recommend this item highly enough. I was a bit sceptical when the description said it is to be worn next to the skin, as I was always previously told that layers were important when mountain hiking. The fit is tight but comfortable; the side zips allow you to regulate your temperature with ease as there are two zips on either side. Plenty of pocketspace for small items/maps etc. I was hiking in approx 80km/hr winds with air temperatures of 2 degreee centigrade, and this was always comfortable as I also had the Buffalo Hood. This is a superb jacket for any outdoor use.  

  Brian Collier
3rd January, 2012

Rated: 5/5

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