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Mens Heavyweight Bison Jacket


Mens Heavyweight Bison Jacket

(5 customer reviews)


Our warmest wool garment. Made with our specialist heavyweight wool fabric woven from fleeces of our own Merino sheep. A naturally insulating, breathable and resilient overshirt that provides protection in all conditions day in, day out.

  • S
  • M
  • L
  • XL


A comfortably fitted four pocket wool jacket designed, grown and made in Britain.


We created our specialist fabrics with one of the oldest family mills in Yorkshire, an area steeped in wool history and knowledge. The Bison’s was developed to offer even greater durability and warmth whilst maintaining wearer comfort whatever the activity.


The soft underside of the fabric was something we worked particularly hard to create with the mill. It not only provides unrivalled next to skin comfort but also increases the amazing thermoregulatory ability of the wool further by trapping air in the fabric and insulating the body. Keeping you warm when its cold and cool when it’s warm. At the same time the durable outer side of the fabric enhances wool’s natural water repellence to provide weather protection.


For use in the field Merino wool is odour resistant and silent, making the Bison easy to care for and useable straight from the woods to the home.


The Bison is a naturally insulating, breathable and resilient jacket to be used in all conditions day in, day out.

Design Features

  • Heavyweight specialist Merino wool fabric provides warmth and weather protection.

  • Four pocket design with button front closures and cuffs.

  • Reinforced shoulder panel.

  • Strengthened seams to retain fit style and durability.

  • Field tested collar height for turned up weather protection.

  • Contrasting trim for a splash of style.

  • Longer cut for comfortable use in the wilds.

  • Naturally soft fabric with insulating inner side.

Size Guide

Measurements in Inches
X Large
38 - 40
40 - 42
42 - 44
44 - 46
30 - 32
32 - 36
36 - 38
38 +

1 Chest

Using a tape measure take the total measurement around the fullest part of your chest, holding the tape horizontally.

2 Waist

Run the tape around the narrowest part of your waist, holding the tape measure horizontally.

3 Fit

Runs large, customers looking for a more fitted style are recommended to size down.

4 Garment Measurements

In order to best determine fit, we advise comparing our garment’s measurements to a similar garment you already own. Lay your garment flat and take all measurements from the outside of the garment. (In inches).

Collar: S - 17, M - 18, L - 18, XL - 19
Chest: S - 42, M - 44, L - 46, XL - 48
Sleeve Length: S - 34, M - 35, L - 36, XL - 37
Front of Shirt Length: S - 30, M - 30, L - 31, XL - 31
Back of Shirt Length: S - 31, M - 31, L - 32, XL - 32

Size Guide Image
Size Guide Image

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5 reviews for Mens Heavyweight Bison Jacket

  1. Ed Magor

    Fantastic jacket! Warm, breathable and durable, surviving everything that can be thrown at it on the farm.

  2. Richard

    My Bison arrived yesterday, the day after ordering. I have been following Herne since a visit to the flock and have waited for this ever since.

    The jacket is fantastic, it is soft and fluffy inside, rugged and smart outside with all the best qualities of 100% wool. This is my go to jacket for most situations and when under my ventile jacket allows me to stay warm in the worst weather in North Scotland. The provenance helps me feel good about owning the the jacket.

  3. Pip

    Some things make one smile, ever more important today, so when I use my Earth coloured Bison jacket I smile!
    So comfortable, so practical, so much better than all those synthetic clothes, why would you not own one for life?
    Love it!

  4. Andy

    My Bison arrived just 24hrs after placing the order, it’s not left my back since it landed.
    Quality is second to none, super soft feel, lovely and warm, I normally take a 44 inch top, and was a little confused which size to go for, but went for an xl on the basis I like to wear a jumper etc under things, I’m glad I got this size, it’s got all the room I require without feeling big or baggy, I probably could have got away with a large but the XL just gives me a few more options.
    I suspect it’ll take many many years of bashing and still be a firm favourite.
    Great product, speedy service, and lovely to support British enterprise at its finest.

  5. Andre

    Yes it’s me again – I ordered the Bison jacket after I fell in love with the Stag shirt.

    An absolutely fantastic piece of kit for trekking around the hills. Protective, hard wearing and warm.

    Very highly recommended

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