Use the table below to match your UK, EU, or US shoe size to the correct Moggans sock size. Our Merino wool socks are designed with a precise fit to prevent bunching and blisters, whether you're hiking, running, or going about your day. If you're between sizes, we recommend sizing up for maximum comfort.
Small
Medium
Large
XL
UK
2 - 4.5
5 - 7.5
8 - 10.5
11 - 13.5
EU
36 - 38
39 - 41
42 - 44
45 - 47
Ultralight Merino ankle socks for racing, speed training and hot-weather running, with construction that is 32% lighter and finer than our standard socks.
Quantity
Product Description
Features
Ultra-fine, low-weight construction for road running, trail racing, marathons and high-intensity training.
Breathable moisture management for hot conditions.
Merino wool blend provides natural temperature regulation and odour resistance.
Streamlined, low-profile fit designed to disappear in your shoes.
Details & fit
Designed in Scotland for performance. Ankle style.
Machine wash on delicate cycle (max 30˚C), using an eco-friendly delicate washing liquid. Personally, we recommend Nikwax Woolwash and a max spin of 400rpm.
Customers praised these merino ankle socks for exceptional comfort and durability, with many reporting 5+ years of use. Shoppers highlighted they "keep feet dry" in temperatures from -10°C to 35°C, stay in place without slipping, and dry quickly when wet. Perfect for running, cycling, hiking, and multi-sport activities. One customer noted customer service issues with shipping options.
5 stars: 29 (97%)
4 stars: 0 (0%)
3 stars: 0 (0%)
2 stars: 1 (3%)
1 star: 0 (0%)
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Christine Coleman
Medium / 5 - 7.5
I bought these for my son who finds the fit, quality and comfort to be excellent. I like the fact it is a company that provide a great product and are such efficient and friendly people to do business with. Thank you.
A
Anonymous
Medium / 5 - 7.5
Great 👍🏻
J
Jo Mill
Medium / 5 - 7.5
Excellent product! These are replacements after 5 years of solid wear
J
John Groves
Large / 8 - 10.5
This is my second purchase of this sock it says it all.
G
Gareth Jordan
Large / 8 - 10.5
Nice comfy and cool socks but thick enough to provide a bit of padding. Wearing with airy bike shoes, these are the perfect summer cycling sock. 🚴♂️
Good to hear, Gareth — thanks for giving the Ultralight Merino Ankle socks a proper test. That warm-when-needed, cool-when-working balance is exactly why we use Merino. Team Moggans
m
martin
Large / 8 - 10.5
These socks have really impressed me and are now my daily wear, will not wear anything else from now on, well done Moggans.
Martin — thanks for taking the time to share this. Good kit should quietly get on with the job, and it sounds as though these have. Team Moggans
J
Jason
Large / 8 - 10.5
Fantastic socks, we have just completed the Rob Roy Way and had worn our Morgan’s socks on 4 of the days including a 35 km day. Dry, happy feet.
Jason — thanks for taking the time to share this. Delighted the Ultralight Merino Ankle socks have earned their place in your kit. Thanks again. Team Moggans.
B
Bobby
Extra Large / 11 - 13.5
Great socks regardless of temperature. Still got blisters but that was only after a 40 miler.
G
Gillian Brydson
Large / 8 - 10.5
I’ve used these socks for years ( and they last for years). Best socks ever !
T
Tim Baker
Extra Large / 11 - 13.5
The best socks. I won't wear anything else!
K
Karen
Small / 2 - 4.5
Love these. Very comfortable well made. Delighted
S
Steve Morris
Extra Large / 11 - 13.5
Second batch of this type of Moggan socks which I use for worm weather trail walking when it’s hot. My feet stay comfortable and dry very fast. Thank you Moggans.
D
DAVID PORTER
Large / 8 - 10.5
Very happy with the socks from Moggans. I definitely wanted socks with a merino wool mix. I've used several pairs from Moggans mostly for running, cycling and gym work and all have been great - very comfy, cool and no slip. They have worked equallly well at Parkrun Canada in -10°c and run sessions in Girona at 35°c.
A
Andrew Wilson
Large / 8 - 10.5
So far they seem great quality. Bought these as they are built to last so hoping that’s the case. If so will be buying more!
A
AJ A
Medium / 5 - 7.5
Great socks! Bought one pair. They’re so good, I ordered another two. Excellent quality. Compression and thickness in the right places. Limited colour choice, but can overlook that in favour of excellent fit and comfort. Wash well. No shrinkage. Would recommend!
c
cathy Booth
Medium / 5 - 7.5
Super comfortable socks
J
Janice Biggs
Large / 8 - 10.5
Bought a pair for all family members. We all love these socks now.
A
Anonymous
Large / 8 - 10.5
Socks great customer service ... not so -These were a Birthday present no option to send to a differnt address, email about this unanswered, cost me another £5 to post £1st class and Royal Mail were late sent thusday recieved monday so did not get for his Birthday run.
Thank you for your message, and please accept our apologies for any inconvenience caused.
Moggans are working directly with the customer as we have identified some improvements which we have activated.
Shipping to a different address is now enable:
• The first address entered is technically the shipping address
• There is a check box that needs to unticked to enter a separate billing address
With regards to the email we believe this was caught in our SPAM filter
Thanks for flagging.
R
Richard
Large / 8 - 10.5
Brilliant! Moat comfortable socks ever.
G
Greg
Large / 8 - 10.5
The sock is true to size.
Comfortable.
A
Anonymous
Small / 2 - 4.5
Extremely soft comfortable and well constructed
k
kirsty-blair
Ultralight Merino Ankle Socks
Completed my first half marathon in the ankle socks yesterday. They were so comfortable. I can honestly say I wasn't bothered by any rubbing at all for the whole run, and they coped well with the unusual heat on the day! Customer service is top notch too. Highly recommend.
h
holmwaude
Ultralight Merino Ankle Socks
Really well fitting socks. The elasticity is absolutely spot on, they don't move around the foot even when wet. They are extremely comfortable and the additional cushioning is in just the right place.
D
Denise Main
Ultralight Merino Ankle Socks
Decided to give these a try to replace my Innov 8 merino socks which were no longer available.. Very comfortable socks that do not move and I wear them for everyday use with running shoes, walking boots and casual shoes . Would definitely recommend . Excellent company to deal with
j
james
Ultralight Merino Ankle Socks
I wore a couple of pairs of the merino ankle socks whilst doing the Cape Wrath Trail earlier this year. The CWT is notoriously wet and I decided to embrace the 'wet' with a combination of Moggan's sock and Altra Lone Peak trail shoes. The socks were really comfortable and kept their shape when wet, and remained warm when both wet and dry. They rinsed through easily and dried quickly. The socks have since seen more action on other long distance walks including the Pennine Way. I've ordered more...enough said.
A
Ashley Cookson
Ultralight Merino Ankle Socks
During an activity so full of variables including often having to deal with excessively high temperature, undulations and multiple terrains the one constant that I would never hike a Camino without again is my Ultralight Moggan socks.
Having recently hiked over 700k (20-30k) per day with 2 pairs of ultralights wearing and washing on alternate days my feet remained cool, dry and most critically blister free leaving me free to concentrate on the task in hand. The same 2 pair of Moggan's remain completely serviceable today and will shortly be heading out to Portugal with me for another 300k.
My Moggan's have become the only item of clothing that are ever present and I trust their performance 100%.
I wholeheartedly encourage any pilgrim walking Caminos to give these socks a try as they offer incredible comfort, performance and value for money.
Ash Cookson
Pro-tivity Coaching
c
catherinecowie11
Ultralight Merino Ankle Socks
These are the only merino socks that I have purchased that seem to fit me better over time. Look forward to testing in some long ultra races!
P
Philip England
Ultralight Merino Ankle Socks
I wore these socks on the recent Lakeland 100. They were comfortable throughout though I did change to a second pair at Dalmain checkpoint (60 miles in) as there had been some wet sections.
I'm a UK 8, although my trainers (I wore Xodus Ultra) are 8.5. I contacted Moggans to ask as I'm almost between sizes. They confirmed my thoughts that I'd be better with medium (5 to 7.5) than with large (8 to 10.5). It was the right choice. I don't like loose socks. They stretch and fit snugly which for me is ideal. They seem to be wearing very well despite the abuse socks get on a long trail ultra
m
mattel85
Ultralight Merino Ankle Socks
I wore these socks for the Race Across Scotland 215 miler.
Amazing comfort and fit.
The socks really dry out quickly when wet which helps combat against Trench foot.
They are really comfy and let your feet breathe.
Alistair was amazingly helpful when discussing the best socks to fit my requirements and needs.
Definitely my go to socks for Ultra's now.
Highly recommended!!
@ultra_matt85
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i am impressed with the service, I bought the wrong socks and wanted to swop them. i was emailed back the very next day, this was no problem. in the end i decided to gift them as Christmas presents and buy the ones I wanted
My Moggans socks performed very well on last week’s ultra in the Balkans. Not a sign of a blister or hot spot. All around comfort. Thanks! A great product.