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Mammut Men's Brecon III GTX® Walking Boot

Member‘s Card Price£140.00

Retail Price £170.00 Save 18%

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Versatile walking boots for comfort and support across varied terrain.

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Product code: 15941977 / 232629

Versatile walking boots for comfort and support across varied terrain.

The Mammut Brecon III GTX® is a fully waterproof half-height walker's boot with a braced insole, made from full-grained, durable smooth leather.

Designed for easy backpacking or the occasional alpine trek, they are supportive and comfortable enough for all-day wear, with integrated Mammut® Motion-Control which gives great flexibility and strong lateral support.

They have a grippy, cushioning and perfectly rolling Vibram® MT Traction sole, a waterproof GORE-TEX® Performance Comfort Footwear membrane, and cushioning memory foam around the tongue and ankle.

  • GORE-TEX® membrane - waterproof and breathable to keep you dry and cool
  • Mammut® Motion-Control - sturdy ankle support with enhanced flexibility
  • Vibram® MT Traction sole - strong, cushioning grip
  • Memory foam around tongue and ankle – provides exceptional comfort

This product qualifies for the following delivery methods

Standard Delivery (3-5 Days) (FREE)


Once despatched you will receive updates from the courier.

Express 2 Day Delivery (£5.95)


Express delivery takes 2 working days when order is placed before 1pm Monday-Friday. Once despatched you will receive updates from the courier.

Reserve and Collect (within an hour) (FREE)


We will notify you when your order is ready to collect.

Click and Collect (3-5 Days) (FREE)


You will be notified when your order is ready to collect.

Next Day Delivery (order by 6pm Mon - Fri) (£2.95)


Delivered by UK Mail. Remote areas may take longer, please click here for more info.

AM Delivery (£7.95)


Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Standard Large Delivery (3-5 Days) (FREE)


Standard Large Delivery (3-5 Days) (£200.00)


Bike Delivery (£4.95)


Bike delivery is £4.95. This applies to all bikes, and these orders are upgraded to a DHL courier service.

British Forces Post Office (BFPO) (FREE)


Delivery before 10:30am (£8.95)


Saturday Delivery (order by 6pm Friday) (£5.95)


Click and Collect Next Day (order by 6pm Mon - Fri) (£2.95)



Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

6 39 6.5
7 41 7.5
8 42 8.5
9 43 9.5
10 44 10.5
11 45 11.5
12 47 12.5

Men's Footwear Size Guide

Measuring tips

Take your actual body measurements as they are more accurate than measuring over your clothes or shoes.

Feet: Use a ruler or tape measure to measure your foot (from the heel to the tip of your longest toe) Be sure to measure both feet. Many people have feet of different sizes. Fit to the larger of the two.

Remember, feet can expand over a quarter size during a full day's walk so ensure you get the right fit.

Ratings & Reviews

Overall Rating

4.56 out of 5
9 reviews
Write a review
4.56 out of 5

Excellent boots...

Took some time to break in, but extremely durable boots, and still waterproof after more than a year. Sole still good too, after daily coast paths and lanes. Will deffo buy another pair.

4.56 out of 5

Really comfortable from the...

Really comfortable from the off.

4.56 out of 5

Very good boots for...

Very good boots for a decent price

4.56 out of 5

Looking forward to really...

Looking forward to really getting to know my new friends.

4.56 out of 5

An excellent boot, comfortable...

An excellent boot, comfortable from first walk. Good support and well made with robust lacing system. Fully recommend this boot, no negatives.

4.56 out of 5

Look smart and very...

Look smart and very comfy

4.56 out of 5

Most comfortable boots I have had

Albeit stiff with little give, these boots are the most comfortable boots I have ever owned. From the first day they have never rubbed me t caused discomfort.
They are stiff but I like.

4.56 out of 5

Too stiff

Bought at a good discount but even so I regret my purchase. After plenty of breaking in the boots remain stiff and uncomfortable, even after I replaced the thin insoles. They have also started to leak

4.56 out of 5

Not a bad boot but wouldn't buy again.

I've walked 220 miles in 12 weeks. Hoping they would give a little from new, they haven't. Good quality and good waterproofing. Heavy, stiff & no ½ sizes. Couldn't walk more than 10 miles in these.

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