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£79.99
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£79.99
Technical, lightweight running shorts built with intelligent body-mapped ventilation for high-intensity temperature regulation, the Merino 125 ZoneKnit™ Speed 6” Shorts feature our breathable Cool-Lite™ fabric blend.
Good for:
Main body: 80% TENCEL™ Lyocell, 20% merino wool/ mesh: 60% TENCEL™ Lyocell, 40% merino wool/ lining: 60% TENCEL™ Lyocell, 40% merino wool, exclusive of decoration
Machine wash cold, gentle cycle. Wash with like colors. Do not use softener. Do not bleach. Do not tumble dry. Line dry in shade. Cool iron. Do not dry clean.
Model measurements:
Height: 185cm / 6'1''. Waist: 75cm / 29". Joe is wearing size M.
Key product measurements:
Inseam Length:15cm (Based on size M)
Regular Fit
Neither snug nor loose - garments that are worn solo or over other layers.
Standard delivery: free for all order over £ 40. Delivery in 5-7 days, from Monday to Saturday, during working hours.
Please visit our Delivery page and find out more about the ways in which you can receive our products.
You have 30 days from delivery to follow our quick and easy return procedure.
Overall rating: 4.675 / 5 from 40 reviews.
The 125 Speed 6" Shorts are praised for their excellent fit and intelligent ventilation. However, opinions on the pockets are mixed, with some users finding them secure and others wanting more security.
Review topics: ["fit","quality","feel","shorts","material","build","moisture","pockets","length","lines","version","wool","fibers","class"].
"Loved the website it’s easy to navigate"
— Perzia m. (5/5)
"Really comfortable and light shorts. I was impressed by the quality and how light and soft to touch they are, almost like nothing is there :) It is very comfortable for long walks, doesn't rub my skin and everyting is breathing. I really like how they fit and look/feel, would definetly buy one more pair! The only downside of these shorts is the lack of side pockets with zip or even without it. The only two pockets are the back pocket and inside pocket for something really small like keys - with really uncomfortable access. Other reviews have mentioned that phone doesn't fit in the back pocket -> this is actually not true, it fits, but only horizontally :) I have iPhone 11 and it fits horizontally, but it is not really comfortable anyway."
— Roman (5/5)
"Love the shorts the fit and material is great. The liner is not adequate for hot yoga. It would be great if they made a short specific for hot yoga that has a longer liner and more wool!"
— Anonymous (5/5)
"Can hardly tell the difference between these and shorts mate with a bunch of plastics while running. They fit well, absorb sweat well, and don’t feel rough against my skin on shorter 3+ mile runs. Can’t speak for how they feel on a long distance run."
— Adam W. (5/5)
"As a heavy sweater who runs 40 to 60 miles a week, I was skeptical that natural fiber running shorts could perform as I need them to, but wanted to give them a try since I have a lot of other Icebreaker gear that I love. I am impressed! The fact that I can wear them multiple times before washing is a game changer. I have not yet tried these in a longer, harder effort, but feel that they would still justify the high price even if they remain my "easy day" shorts. They fit true to size and the length is ideal for a regular run (I would go shorter for a race or a hard workout). I wish the pocket had some form of closure like a zipper, but have kept a credit card or a key in there without incident. I don't think there's really another company making a product like this and I'm glad it exists! Love to avoid bringing a little more plastic into the world."
— Edmund M. (5/5)
"Shorts are comfortable and true to size. They fit well breathe well and are soft and don't stink after a long run. Would recommend putting these ingo the rotation."
— Anonymous (5/5)
"Totally good for going to the CrossFit gym. They seem sturdy and reliable."
— Anonymous (5/5)
"Totally good for going to the CrossFit gym. They seem sturdy and reliable."
— Brendan (5/5)
"The shorts are Ok but the material does not seem to maintain it quality. I would not buy again."
— Sam (3/5)
"Best shorts I've ever had and I've tried many pairs, I use them for long distance trail running . They don't shed moisture quite as fast or well as nylon/polyester, but that's a price I'll pay to avoid plastic shorts. Also, the pocket is too loose to be much use, this material is just has too much give/sag for a pocket like that. But these are still my go to shorts. Obviously you must launder them as you would wool if you want to maximize their life/durability."
— Ash (5/5)
Find the size that fits you best based on people just like you.

Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different sizes, order the size indicated by your chest measurement for tops and your hip measurement for pants.
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| Waist | 27.5-29.5 | 29.5-31.5 | 31.5-34 | 34-37 | 37-40 | 40-43.5 | 43.5-46.5 |
| Hip | 35.5-34.5 | 34.5-36.5 | 36.5-39 | 39-41.5 | 41.5-44 | 44-46.5 | 46.5-49 |
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| Waist | 70-75 | 75-80 | 80-86 | 86-94 | 94-102 | 102-110 | 110-118 |
| Hip | 83-88 | 88-93 | 93-99 | 99-105.5 | 105.5-112 | 112-118.5 | 118.5-125 |
*Looking for the inseam length? Please refer to the product page to find out.
Our three different fits - slim, regular, and relaxed - ensure that when worn together, layers move and breathe like a single garment.




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